Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f02a7194d747ef3…

MALICIOUS

PDF

66.7 KB Created: 2021-02-15 16:46:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e9fe5950980a82badeb934f31edcebef SHA-1: eb3becf6f738e8bb758d1c8e1a9825ab83d30e13 SHA-256: 1f02a7194d747ef36e9ca306e90da150b115418886ac67e0edcb6e1f5aad7f79
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=cuddl+duds+sheets+full PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410954/normal_5fe83004ea3f4.pdfIn PDF document text
    • https://palogipotutaz.weebly.com/uploads/1/3/2/8/132814365/a42255be87965.pdfIn PDF document text
    • https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/riketizimilame-donubusuw-dudigitot-todesofefusuza.pdfIn PDF document text
    • https://fujuzelos.weebly.com/uploads/1/3/1/3/131380065/8e6bf919edd.pdfIn PDF document text
    • https://lofativunami.weebly.com/uploads/1/3/4/5/134581692/1437698.pdfIn PDF document text
    • https://zozabamefopofa.weebly.com/uploads/1/3/4/2/134234868/bivaji-zamidamu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369495/normal_5fe5c74819a8b.pdfIn PDF document text
    • https://tafubevodila.weebly.com/uploads/1/3/4/0/134016741/nojukaleseja-linamubo-zapazom-vanimuzefozazuz.pdfIn PDF document text
    • https://bunadijora.weebly.com/uploads/1/3/4/4/134432215/88b80debb011.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455185/normal_60068b9d13f50.pdfIn PDF document text
    • http://jixusigelabewe.iblogger.org/9255058945.pdfIn PDF document text
    • https://fiwebafifike.weebly.com/uploads/1/3/4/8/134885554/laledotupefi-lajaladikaza.pdfIn PDF document text
    • https://kemivepume.weebly.com/uploads/1/3/1/4/131407144/8133821.pdfIn PDF document text
    • https://xinuxarovota.weebly.com/uploads/1/3/0/7/130776268/3226339.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424036/normal_6004be0398d5c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xolazituvote.epizy.com/sejewigovetozo.pdfIn PDF document text
    • http://bolagiwajaretu.rf.gd/nuvovowaxewinanedow.pdfIn PDF document text
    • http://zebofazedixa.rf.gd/online_application_form_for_korean_visa.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_off0000c8b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B6 4596 bytes
SHA-256: 25be9a32a312b6ebf5bfae07c4790e9c8abebbddee29083484abda50b9fae462
font_01_sfnt_off0000d852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD852 10632 bytes
SHA-256: 111236bcdf4a30c9784387a6ddd8932e96e177154c9398ea9f04cebc898324f2

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