Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e940147d4d82de8…

MALICIOUS

PDF

96.1 KB Created: 2021-06-07 01:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 1cce28f141aeea893efe6142131dc161 SHA-1: 6990d42f6a3f0e7090dcf1f4f34d0005028faadb SHA-256: 5e940147d4d82de8007d61fd751058ec950de77eae248568d9fa68240e308e42
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a link farm, which is a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure for a movie, further supporting a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://archism.ru/pbw?utm_term=main+hoon+na+shahrukh+khan+ki+full+movie+video PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418362/normal_604d1ae15454b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369493/normal_5fce3f44848f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493916/normal_600d414f03f54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466398/normal_60063196e1001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416125/normal_6039624de4e03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454051/normal_6032ac3838b2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461207/normal_601741acb9923.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426085/normal_5ff6353d8bc9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459482/normal_5fe903302d098.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383471/normal_5ff9af86a553f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a042a494-aff6-4402-a164-3399b19dc8af/bixagunekolowijilimu.pdfIn PDF document text
    • http://zixereves.pbworks.com/f/57763570552.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90685ec9-5904-402c-a5c0-5a6ca95c7c80/67633194268.pdfIn PDF document text
    • http://taxexuwej.pbworks.com/w/file/fetch/144455244/42222668807.pdfIn PDF document text
    • http://sisagexal.pbworks.com/f/vibakuwadipujo.pdfIn PDF document text
    • http://zufumegi.pbworks.com/f/funapupozikunofodidaviwiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e30c36bd-adcc-45e3-ac3e-d80734f3e418/gidivenomuxuzitulufi.pdfIn PDF document text
    • http://gosirata.pbworks.com/w/file/fetch/144668838/how_do_you_write_a_budget_proposal_sample.pdfIn PDF document text
    • http://fekofowipuze.pbworks.com/w/file/fetch/144696351/16372575765.pdfIn PDF document text
    • http://rawumadakora.pbworks.com/w/file/fetch/144751737/adjustment_disorder_with_mixed_anxiety_and_depression_dsm_5.pdfIn PDF document text
    • http://nerobedevu.pbworks.com/w/file/fetch/144655077/.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b327a8cd-437e-4e53-879e-7537b3b7c196/51118682899.pdfIn PDF document text
    • http://sujagajo.pbworks.com/f/84734760589.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D95 5080 bytes
SHA-256: 6fd14dd9fee359a189c6cbe70d8fff9a2525c9ee25cf7e2fa6270b628f355964
font_01_sfnt_off00011eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EAA 15424 bytes
SHA-256: 8e23b2d0f4c720d1daf301c6d628f1ddfe22f3905276dde2ece8ce7642531a73
font_02_sfnt_off00014ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EF9 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off0001640e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1640E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e