Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3e360474687375e…

MALICIOUS

PDF

72.0 KB Created: 2021-03-06 06:57:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c5dc4bed8ca6a7cf0b8544a2ef5144d2 SHA-1: 2ae20286954f85b47d851056fa2da3fd2ca71695 SHA-256: a3e360474687375e8d1369d385b21bc74eaa81f67ae266857064f86178719ed6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/award?keyword=best+survival+kit+backpack PDF link annotation
    • https://dikemogegopur.weebly.com/uploads/1/3/1/4/131406608/0ab14a4.pdfIn PDF document text
    • https://zodoxofavuzawa.weebly.com/uploads/1/3/1/4/131437464/c2c6d15363ab.pdfIn PDF document text
    • http://wusator.mygamesonline.org/firaworufalevezewo.pdfIn PDF document text
    • http://enots.space/na_meeting_guide_app08qre.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415950/normal_5fd70eab63da2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376357/normal_5fe7aef7aeeb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378618/normal_603a249557acb.pdfIn PDF document text
    • https://gukejokofa.weebly.com/uploads/1/3/0/7/130739315/tavitafusaxino-rosubu.pdfIn PDF document text
    • https://xaxozugine.weebly.com/uploads/1/3/2/3/132303195/vidikaledina.pdfIn PDF document text
    • http://usacreditcheck.info/vba_word_search_and_replace_stringrws3l.pdfIn PDF document text
    • http://profer-opt.ru/mitizuzodaseyxm77.pdfIn PDF document text
    • http://znakomstva18x.site/kusosevivexamoxadgu6ky.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f2d828cf-06d9-46ea-85af-d88b0bc20d44.filesusr.com/ugd/501a20_8470c937731648a897dde8038cec58c9.pdf?index=trueIn PDF document text
    • https://df1882fa-13c5-42f1-8438-577935b594b9.filesusr.com/ugd/91932b_a0cfc38c8b294b6598e7f73e1563b535.pdf?index=trueIn PDF document text
    • https://d046670e-94b8-4ea2-8efc-69fca9b502c9.filesusr.com/ugd/c0b427_e6ca4c36de024ae79e210321cd507ea5.pdf?index=trueIn PDF document text
    • https://200ee3fc-349d-4871-b5c3-2c1c69b60476.filesusr.com/ugd/7b00a0_52d90b3700954079b96e563e76c9963e.pdf?index=trueIn 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_off0000dd91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD91 5240 bytes
SHA-256: e51b8cbc5f83715b9c3d5e2257d4328ae982cbdd923904652c1a325c5833495a
font_01_sfnt_off0000ef76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF76 10492 bytes
SHA-256: 8e7c283f2cc6225a49245c7d4985a9bca99bc97193bc76765f0931e23aef18e8

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