Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ec58035bb14878a…

MALICIOUS

PDF

89.6 KB Created: 2021-07-17 18:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 56ffda889079def0261a465e00d29a90 SHA-1: c8f948d90b7d9e73d713d3fd67cbcea7e2538008 SHA-256: 6ec58035bb14878a24555e9e5d4887d1e9eadf9cd45853e838095c43f15b613d
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to compromised WordPress installations and disposable hosting. The document body is heavily obfuscated, preventing analysis of its specific content, but the overall structure and URL analysis strongly suggest a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/b133fbd29d9a90db2c250e803ffd53bc/62539935212.pdf In PDF document text
    • https://tavio.ru/files/file/lifulenidatovuwiroxikum.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/2ac036fb93eaa14488b09cc7e1475a2c/fekasewotometor.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa5f3a2e4c---36398499945.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/29360892194.pdfIn PDF document text
    • https://grancom.by/upload/docs/gujakazawodigusoso.pdfIn PDF document text
    • https://tolgyesvolgy.hu/userfiles/file/wamijub.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc1dfbf2ffc---wogivuneliwifufuzagope.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/j2klur8935vdgiianbpsvr5i80/xipamajuziximixojiwedobo.pdfIn PDF document text
    • http://irk-yoga.ru/upload/files/43810341584.pdfIn PDF document text
    • http://ventilyatsia-v-sochi.ru/ckfinder/userfiles/files/jubedulutazazufaz.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608816fd99cf0---12868658483.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/970409e6ce997a535c69a47260dc3a41/nulugijovosunanuba.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/77097012770.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16090a35a23ab9---38110155121.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/7cc4d2e6bf3d618e303092f59e978f47/93705131546.pdfIn PDF document text
    • http://hoteldazegliotorino.com/userfiles/files/8192168240.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab43c662d8d---24708837143.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16073bc6c8029b---8639197920.pdfIn PDF document text
    • https://youkuvpn.com/upload/files/wepovawebovujalifirese.pdfIn PDF document text
    • https://couvreur-hautdoubs.fr/internet_new/images_et_fichiers//file/sadapadazonofefot.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bb1356d93d5---97792319433.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/9chi6hcmfsh12c9pdoim0073lt/70569293121.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=quality+without+tears+pdfPDF 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_off0000fb5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11376 10852 bytes
SHA-256: 1c092f4dd8fe3b171bd82a90ce4ac77dd9cc3af963cd86981ff72a880b2761f3
font_02_sfnt_off00012cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD2 17064 bytes
SHA-256: 6136ce47e70f1cfaf761fb17a37cde6650086730834ac148b7a3b7743dc83708

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