Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c947c9e2cac640…

MALICIOUS

PDF

95.3 KB Created: 2021-06-26 00:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: c9fac924f8f4380082b9459f9a10ee18 SHA-1: c1918ed3ca65ef5d736be73e64a5b7917a0ff486 SHA-256: 58c947c9e2cac640cfe3e82446c55f9d3c1eaf6caa4a95de222677f1a3074bd1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised WordPress sites, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links. The document body is unreadable binary data, offering no direct clues to the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://brs.jo/userfiles/files/telavamitujix.pdf In PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/6de4abe3e9b575bba5cd0632c61621bd/13498981285.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0ccc7d42b3---rufevivomovejarekojixafol.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/vjevb8th5bvo21uudj1krm5tk9/xonatijibixelovofiwijube.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608610bfaffc2---46592700084.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/bki7kkvggoa4672m5i03j8vdq0/jawadedukojuni.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c0775fd517f---xasejefifa.pdfIn PDF document text
    • http://nandeestationery.com/userfiles/files/gapuravinun.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/ed6649a94da26c15c557a816ae628356/nukuwerufivato.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/dgav3coveifo0g4eft7v50tlp5/14286876469.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cffc958d7f---26747455890.pdfIn PDF document text
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/eec400a253cf50e6e205d8a656979958/juropipakapotefavix.pdfIn PDF document text
    • http://ecogestval.com/userfiles/file/91101923913.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/51f828018289ef9873a8ae69f258a2fa/48635799513.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1609dbf8c29de0---lekatusi.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb59118008---zegutepofolamonozagek.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/iud7tjk0pfh1h1e475ipuc8qrc/wofuvisubaviraz.pdfIn PDF document text
    • https://botorka.ro/userfiles/file/sinetibavoxuze.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16089f649e53df---xetubedemekasi.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/hre7eqmjv1jsdhm8dgq8rd6sj2/jusexixodamumex.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/4e22829fdf632023c8eea89a9a7b18be/wasoxofozajolalejevinunet.pdfIn PDF document text
    • http://sintellect.ru/Repository/file/69195521314.pdfIn PDF document text
    • https://hssipm.com/wp-content/plugins/super-forms/uploads/php/files/85e1748201424d47a17f952eebfb6aae/29771364063.pdfIn PDF document text
    • https://incoyun.com/calisma2/files/uploads/kepasufafenezuzanip.pdfIn PDF document text
    • https://avigailpekelman.com/sites/default/files/file/sofepodujudusine.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d6476662c5c---govagutunetuwanoxuwu.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/27f2f1ba5651cfdc3691190cec028582/mupafajaxazekofigifura.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b451864c5e6---98614883019.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=things+that+rhyme+with+chocolatePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010af8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF8 10840 bytes
SHA-256: 94bd16225f65a811d59a5ef580eb161c2202fd4727d8b5ff21e54d221486b69e
font_01_sfnt_off000123e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123E3 19568 bytes
SHA-256: 2ef2786d0826f0e8e31157f610814f1208473ac4249a19a55c02b07b83ee6100
font_02_sfnt_off00015784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15784 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.