Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d823e4db8e2842a…

MALICIOUS

PDF

82.8 KB Created: 2021-05-27 04:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f5de7a99b64076200747c82b239beeca SHA-1: a592b1372b25b98518b494de5a0f38e4523e0a13 SHA-256: 3d823e4db8e2842aac0280d17c428100fb00dc9f5107a7ff2a3089c0efadcc20
156 Risk Score

Malware Insights

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

This PDF document contains numerous external links, a common tactic for SEO spam and phishing. The primary malicious URL identified is 'https://seumenha.ru/strik?utm_term=burnout+paradise+remastered+crackwatch', which is likely used to distribute malware or redirect users to phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/strik?utm_term=burnout+paradise+remastered+crackwatch PDF link annotation
    • https://pobubejafak.weebly.com/uploads/1/3/5/3/135314602/tizaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371497/normal_6046350d7f7b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501791/normal_5fdc40a01aa92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_604a1fef13c42.pdfIn PDF document text
    • https://jigulukeduza.weebly.com/uploads/1/3/4/5/134508725/dulafutebi-dapak-wotiripuri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_60430a1ecf54b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_603faa120f2c0.pdfIn PDF document text
    • https://sikefaliwubu.weebly.com/uploads/1/3/4/3/134375420/sitegajovikexe-gipanekuw-mububaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473410/normal_604ca021035cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458161/normal_6026d06da2a5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409604/normal_601096ad8057b.pdfIn PDF document text
    • https://doxuginuf.weebly.com/uploads/1/3/5/3/135346615/wikunum.pdfIn PDF document text
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/4634225.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470526/normal_5fd0ead32e66e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa976e1b-3703-47d5-b459-4f6e17d6c4ff/define_gutenberg_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60031f9b-3c3e-4a69-ab6b-71bb153d66f0/craftsman_3000_psi_pressure_washer_pump.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0beec875-3b36-46f2-a9ab-91906bc96098/html_to_converter_php_source_code_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/740d5b24-671d-48a6-aa7b-6ce9659bcb74/57076571859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebb1d52e-13da-48a7-ab89-230088ad0df3/dbt_skills_training_handouts_and_worksheets_by_marsha_m._linehan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83ec0d92-18d2-4db1-890f-581df23a1392/what_was_the_main_goal_of_the_north_atlantic_treaty_organization.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/945323ec-3a9a-4335-b6b1-62aae63999f7/42998606179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a076d1f2-1ee1-4f7d-a337-10df2655d9a0/wixepogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43716d74-afed-4263-8bc2-1adae64c1acb/luvivesa.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10324 5488 bytes
SHA-256: fa343104dbdb503798d86b895ed471b1ce137cad494d6a0040121927cfa3b502
font_01_sfnt_off000115ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115BA 11264 bytes
SHA-256: b535ff5edf0fe13596d5ee2e33efa4baf7de71bc5e6c4981cae16f1161334bda

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