Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b3c119598089a1f…

MALICIOUS

PDF

70.1 KB Created: 2021-02-20 00:31:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 66053c6dec503394194419be899e2426 SHA-1: b0c42a61913ef8e096aa0d09c3aae2445987217d SHA-256: 6b3c119598089a1fa8a9b3035230ec65ada5672fb96c167c4d52215bda18a4d8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=ecological+pyramid+worksheet PDF link annotation
    • https://niforobufuxir.weebly.com/uploads/1/3/4/5/134512868/9783645.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_6015ee30adbcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481675/normal_5fd6ac1fd065d.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/hdgi7ed/power_media_player_has_no_sound.pdfIn PDF document text
    • https://nokajadum.weebly.com/uploads/1/3/4/8/134887388/retipuf-tagumemaginuzij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418786/normal_600bcb5aa286d.pdfIn PDF document text
    • https://ruwixotuso.weebly.com/uploads/1/3/4/1/134131383/46454.pdfIn PDF document text
    • https://cdn.sqhk.co/wasefago/ljhhcPF/somelelujikenifim.pdfIn PDF document text
    • https://giwitororozesal.weebly.com/uploads/1/3/4/6/134652081/fc65f5a1f87803.pdfIn PDF document text
    • https://jodisugej.weebly.com/uploads/1/3/4/7/134732418/vepeg.pdfIn PDF document text
    • https://dowisapi.weebly.com/uploads/1/3/4/2/134266119/d382e50be859.pdfIn PDF document text
    • https://cdn.sqhk.co/zotipimesaza/ewkJgeZ/popekavutikonuwoda.pdfIn PDF document text
    • https://dumidonawusirug.weebly.com/uploads/1/3/5/3/135306770/zamidakosabilasozeda.pdfIn PDF document text
    • https://mowofagafuvu.weebly.com/uploads/1/3/4/5/134594922/kozebexim_jopofifazap_dagosibegawut.pdfIn PDF document text
    • https://cdn.sqhk.co/mepofazobi/bggyljh/wepajijab.pdfIn PDF document text
    • https://kafiwixuvaso.weebly.com/uploads/1/3/0/8/130874495/fc938ed20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450043/normal_600d0c17cb812.pdfIn PDF document text
    • https://milorupubi.weebly.com/uploads/1/3/4/3/134317418/5412393.pdfIn PDF document text
    • https://namunoxup.weebly.com/uploads/1/3/5/3/135339392/xowaremubijakeji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d60c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60C 5700 bytes
SHA-256: bef02fe6feb691ff56a82ccb8c397b5c40c11cddb5135d9e67f91dc3c2583b73
font_01_sfnt_off0000e966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE966 9788 bytes
SHA-256: a899ec2b76a6fd126d5d6457f13bf0cd507a8d73576bdf574ff1bf2b104b2477

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