Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5cd2a6d090afba…

MALICIOUS

PDF

278.3 KB Created: 2021-06-27 14:31:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 9696edd8de05607f638b438cefe6a2b2 SHA-1: 4e8dd25c32a16557ec6f55ddb914cfaa2aa1281e SHA-256: 1e5cd2a6d090afbabad25a040a7f995f86685312259db1db6c6b1c38458252c0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of numerous links pointing to compromised WordPress upload directories suggests a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and link farm indicate an attempt to redirect users to malicious content, likely for credential harvesting or further infection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9890

Heuristics 5

  • 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.
  • 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.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/gqnro0rnvev83pgqt2rkfpfue7/26756828081.pdf In PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/68d10ea816c0b4504ec51bc99406884b/biparitasaxoxuv.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/d135c138b959f7aa253ce9f1eeb82f3f/mimabimaxowokonox.pdfIn PDF document text
    • http://khamtribacninh.com/images/files/9405736947.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/gutmf9lo8umhahd42dnsve4ek0/24283504014.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/k5f173h05kklcll5d51hsqn0q6/51338719434.pdfIn PDF document text
    • https://avela.md/userfiles/file/vuvakivapuxejis.pdfIn PDF document text
    • https://hirurgija.me//files/17668530354.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608fbb9a4e613---rimikodejavowubujifix.pdfIn PDF document text
    • http://parfumerieindex.nl/images/uploads/sagizugovu.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/2f85b30e68a150d34360d8eabf829b8d/larexepizaziguwow.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/3256ee401554f3599f3bfbdb096fda28/69054229773.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160ad5437e1663---78167846561.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160930a298f971---24469710093.pdfIn PDF document text
    • http://alnoorcity.com/userfiles/file/kotexev.pdfIn PDF document text
    • https://mygenius.ru/admin/ckfinder/userfiles/files/zakazadokev.pdfIn PDF document text
    • https://cs168.tw/upfiles/editor/files/rajonam.pdfIn PDF document text
    • http://guides2alpes.org/uploads/file/korewip.pdfIn PDF document text
    • https://bucatariizidite.ro/printuri-fi/files/fudaxuteparaxe.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160982c437cc74---87571335142.pdfIn PDF document text
    • http://allamericannursing.com/userfiles/file/dofomusipa.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/db0ef6b6885d7903e23edf2c964f8bdd/17565648406.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=hermione+granger+and+the+sorcerer%27s+stonePDF 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_off0003e9a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E9A2 10796 bytes
SHA-256: 00a1305715403c3e89789e3663539a4c4a0702b9b951bf8f34d4db602310c918
font_01_sfnt_off00040220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40220 18476 bytes
SHA-256: 39daa6f158df1b19bdfb4038b3d8bab6e1b45c1decadc5311b22763c9570c3ca
font_02_sfnt_off00043291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43291 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1