Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0dd1c195c138f0…

MALICIOUS

PDF

73.2 KB Created: 2021-02-13 01:02:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a8365e18fc66242e6ea55555c2b88654 SHA-1: 969f71e3a320a36c8c6fb669a1652d06d3be3d96 SHA-256: db0dd1c195c138f0dfd1074c54f6f3edb600dc92facd15301f40f4d71ca1f8f4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://leonvi.ru/aws?utm_term=dimensions+of+a+half+sheet+baking+pan PDF link annotation
    • http://sfr-webmail.com/394139706360r2c1.pdfIn PDF document text
    • https://lugexobamav.weebly.com/uploads/1/3/5/9/135965248/matiwanunekuw-zugujufesixarew-roloz-dusulafefenami.pdfIn PDF document text
    • http://winsbig.space/775085101913vttu.pdfIn PDF document text
    • http://mazafaka69pussy.online/elementary_linear_algebra_11th_edition_sladeruu1lk.pdfIn PDF document text
    • https://cdn.sqhk.co/livefivepa/cRFjfha/talking_tom_gold_run_cowboy_angela.pdfIn PDF document text
    • https://puvawenoma.weebly.com/uploads/1/3/3/9/133999826/govinek.pdfIn PDF document text
    • https://livabobuladezer.weebly.com/uploads/1/3/0/8/130874084/aa482a8c.pdfIn PDF document text
    • http://usersdeviceprotectionservice.site/best_chess_openingsgbizn.pdfIn PDF document text
    • http://pravagims.net/bedomuvodalilik6s.pdfIn PDF document text
    • https://mevamakokuvafas.weebly.com/uploads/1/3/4/0/134040887/e0d58f45.pdfIn PDF document text
    • https://tejenopaje.weebly.com/uploads/1/3/1/1/131164027/1558237.pdfIn PDF document text
    • http://winoorama.space/51251372155ijvon.pdfIn PDF document text
    • https://cdn.sqhk.co/purorelaz/hg9giaI/34070735703.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/ajehfqQ/gufab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pipaneku/97894799197.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_off0000e19a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19A 5424 bytes
SHA-256: 523e20fb377632906f3c6a810e950e9f545e6fbab2d037509444c0fa114f5d78
font_01_sfnt_off0000f3ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EE 10624 bytes
SHA-256: a7941e6e4ab1e9a54129ea6893e69098f317351af04667db0c5cf3243989e7bd