Malicious PDF — malware analysis report

Static analysis result for SHA-256 eede776b66081754…

MALICIOUS

PDF

101.0 KB Created: 2021-06-26 12:50:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: faea9a2727cc8056f17372fca4feda7a SHA-1: 5ca59ffdb3420229c82fb17034344f87c191349c SHA-256: eede776b6608175484f64a74820925835b37b4b6a8ea1ffaff6f24ba3db6fde3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous links to external websites, many hosted on compromised WordPress sites, suggesting a link farm or phishing lure. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9938

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://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/cf2984ea956982292c01766a6a1589d4/foralabejojux.pdf In PDF document text
    • http://ketoanantamhcm.com/uploads/files/webezupes.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a50e1d6c246---zoselukasesebagol.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608402063bf31---86118061951.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/13d1a0d753dcb7b0ede3f2c670aaceb8/16750299426.pdfIn PDF document text
    • http://geyikkimya.com/userfiles/upload/file/50776340896.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/f2b123c7b3958d7e267be541a26778f0/koxurosatiwitepa.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a16d50013a---zugarezejubodakexulis.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/eaa48b4517483ce7e1b34af169b0552a/71011898666.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/2on1mo05k91bmfkhbnd9tprq4d/nijafatamiberumifunipoguf.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2841820f7f---1333098572.pdfIn PDF document text
    • http://urduhadith.org/survey/userfiles/files/milodaxapix.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609ad6146f8ae---31383852906.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/fbf8c93ecab4e104e23ecb00678dcd99/79515133157.pdfIn PDF document text
    • http://elm3rad.com/file/dadolupavedojekaziwonowa.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f61771d658---89939595764.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/4e8b85130a489c4df5de72418c45f6b3/85913326759.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3141e19784---vitopojelog.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/5b2cedcab4a6cd0a934be6f758af52df/tawerisavajovibaj.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/tibamozivuvegelunewaxawub.pdfIn PDF document text
    • https://thietkevuphong.com/uploads/image/files/17460089727.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6858842cf---36099702258.pdfIn PDF document text
    • http://thetsaban3watnuea.com/UserFiles/file/fisuve.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=royal+marines+slow+marchPDF 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_off000127ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127FF 17244 bytes
SHA-256: 900a1b3e9e5eb7cb67a07af50d868035ca3c125d6297a2115da229bf278afd8a
font_01_sfnt_off0001553c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1553C 10644 bytes
SHA-256: bf874e349e7d07b81edbbfab3a84c3e59bc7c80854f7701a9ca6f757db785eb8
font_02_sfnt_off00016d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D75 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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