Malicious PDF — malware analysis report

Static analysis result for SHA-256 222e07a13d6d0bb9…

MALICIOUS

PDF

101.7 KB Created: 2021-03-17 22:38:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3adb4d734b3d3d5fc981b3fca250654a SHA-1: b29743f6f3c6a397458590f61e2fc153edd141c0 SHA-256: 222e07a13d6d0bb9c832d37664775383bf0358db9500dad497d83c029d89fef9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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://pelibifir.ru/wix?keyword=monkey+madness+2+quest+guide+2007 PDF link annotation
    • http://shoop-fm.ru/751667464030t9e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465264/normal_5fdb0a2591985.pdfIn PDF document text
    • https://tekudijasefemo.weebly.com/uploads/1/3/2/7/132740256/faxoxo_ladap.pdfIn PDF document text
    • https://menekagamop.weebly.com/uploads/1/3/4/0/134097565/129018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485943/normal_5ffa22f4b0f40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481667/normal_5ff8f9ca10456.pdfIn PDF document text
    • http://sy0n.icu/xiralabexvjwe6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449410/normal_603f4249bc250.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454422/normal_6038531db5d91.pdfIn PDF document text
    • http://scm03.ru/can_the_netgear_ac1900_be_used_as_an_extender1g5o9.pdfIn PDF document text
    • https://reseviris.weebly.com/uploads/1/3/5/4/135400779/milafonolidita.pdfIn PDF document text
    • https://tugoxovelosiju.weebly.com/uploads/1/3/0/9/130969774/mupexixomuturi.pdfIn PDF document text
    • http://zumanidoxup.medianewsonline.com/easy_classical_piano_music_books.pdfIn PDF document text
    • http://verifybadgehelp.com/shark_vac_and_steam_replacement_partsoi7as.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383924/normal_5fdbc0596640a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378641/normal_5fe0ba3291fb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482190/normal_5fe92f91b9d14.pdfIn PDF document text
    • http://mugukix.mygamesonline.org/zevuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415525/normal_5fee4204a205c.pdfIn PDF document text
    • http://sayfelengs.space/niduxuxewuzoramewilimufajdden.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412413/normal_602ee4beb9986.pdfIn PDF document text
    • http://cupe1.ru/brain_games_for_adults_with_dementiaizpge.pdfIn PDF document text
    • https://ronurakegilapoz.weebly.com/uploads/1/3/4/8/134852428/6423559.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tiwatimab.atwebpages.com/jitoxiwujapiniv.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_off00015082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15082 5668 bytes
SHA-256: 5f9bef54d5db1babaf4d5a7aa8daac2606cf0a5a8c8d91dcf523198cbb7fa9be
font_01_sfnt_off000163d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x163D6 11068 bytes
SHA-256: d30ecad44d6b1385c66bee6247d2fdf0789f833414a689f06f9869c560dcdb4e

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