Malicious PDF — malware analysis report

Static analysis result for SHA-256 155ffab6ad32744a…

MALICIOUS

PDF

72.9 KB Created: 2021-02-14 06:41:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 125511f15551c18e4132dedbb5f6e32e SHA-1: fb0976102614c03e3825f36fead14e5c843797bb SHA-256: 155ffab6ad32744a97adbdeec847ed76ddd05c187ecdb907b06d96d14852f44b
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://nizuwutino.weebly.com/uploads/1/3/1/4/131482859/ledinetiwoju_wowozogewigof_supefaja_vegiri.pdf.
  • 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://maypoin.ru/wix?keyword=best+discord+bots+for+minecraft PDF link annotation
    • https://nizuwutino.weebly.com/uploads/1/3/1/4/131482859/ledinetiwoju_wowozogewigof_supefaja_vegiri.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454984/normal_5fff401dcd5a7.pdfIn PDF document text
    • https://kowuzuworos.weebly.com/uploads/1/3/2/6/132682574/tubanaxujufefike.pdfIn PDF document text
    • https://doxugibako.weebly.com/uploads/1/3/0/7/130776338/lebesujosez-bojozowobati.pdfIn PDF document text
    • https://zabuxowinuj.weebly.com/uploads/1/3/4/8/134874463/punagoga_gufujebagopu_wobafoxu_timokeru.pdfIn PDF document text
    • https://depujoseteg.weebly.com/uploads/1/3/5/3/135309287/ce9be0e2.pdfIn PDF document text
    • https://sibozigoguxo.weebly.com/uploads/1/3/0/9/130969143/7281714.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/7bb439be5.pdfIn PDF document text
    • https://tewafegode.weebly.com/uploads/1/3/5/3/135350941/9875489.pdfIn PDF document text
    • https://sowotelimavo.weebly.com/uploads/1/3/4/0/134000290/sopobitiz.pdfIn PDF document text
    • https://mimifutugeteze.weebly.com/uploads/1/3/0/8/130874087/fanitunorozise-kebunole-fadimesibak-gazad.pdfIn PDF document text
    • https://lipegarexepi.weebly.com/uploads/1/3/5/4/135400683/91d2f25e7e43.pdfIn PDF document text
    • https://butevexonukuzi.weebly.com/uploads/1/3/2/6/132681970/8905496.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/rolefosiju/paris_talks_abdu_l_baha.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/pogadi.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_off0000e1ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AB 5324 bytes
SHA-256: f0d5583c02cc411573f6ab689d177083a4780518ad0610ac5de4a17844dec3b2
font_01_sfnt_off0000f3ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AD 10332 bytes
SHA-256: 17993affad81daf569659d43e699958d8c0b9cf5f6b1bc15645813f7d0dfc738

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