Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bf6e2f85680474f…

MALICIOUS

PDF

72.1 KB Created: 2021-02-25 23:08:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 75358a169144979468ba4cf53ea831fe SHA-1: 97f804b53851ab0281a287e59aed9e04c2309a2c SHA-256: 7bf6e2f85680474fd39653de4c3ce2ce6c4f55a252efd49e76e3837cb2752967
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://seumenha.ru/award?keyword=gopro+hero+3+white+specifications PDF link annotation
    • https://sigesibum.weebly.com/uploads/1/3/1/4/131438142/fc262a7e00b.pdfIn PDF document text
    • https://rezodipegizosif.weebly.com/uploads/1/3/1/6/131606434/5433609.pdfIn PDF document text
    • https://dorakipep.weebly.com/uploads/1/3/4/7/134747047/9d4802.pdfIn PDF document text
    • https://nalovitifa.weebly.com/uploads/1/3/4/6/134600698/aa2557d391d523.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379035/normal_6030dfb928b11.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/common_core_ela_standards_grade_5_writing.pdfIn PDF document text
    • http://pepujolajerikur.66ghz.com/9479477265.pdfIn PDF document text
    • https://vanimiravupu.weebly.com/uploads/1/3/2/7/132710567/2395974.pdfIn PDF document text
    • https://vanizubifimid.weebly.com/uploads/1/3/0/8/130874516/c716e2f270f2e0a.pdfIn PDF document text
    • http://leledup.mypressonline.com/kopajumasamebenedejiwax.pdfIn PDF document text
    • https://dorikorojuj.weebly.com/uploads/1/3/3/9/133987202/zodutavipopigebofiz.pdfIn PDF document text
    • https://fapojenulexo.weebly.com/uploads/1/3/1/3/131383319/vizarog.pdfIn PDF document text
    • https://dunomomavelow.weebly.com/uploads/1/3/1/4/131407267/6989123.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416928/normal_5fdf0194b758f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sokevojufepizi.rf.gd/spektrum_dx6r_receiver_compatibility.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/tabla_de_conversion_de_centimetros_a_pies_y_pulgadas.pdfIn PDF document text
    • http://luwemazezabubat.rf.gd/34557144267.pdfIn PDF document text
    • http://sobuzazan.rf.gd/plasma_carburizing_process.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_off0000dcf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF6 5356 bytes
SHA-256: fa993446f41f3ba0c9856c05f869c54b36778ec66161d88e6e749cf42f1fc341
font_01_sfnt_off0000ef42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF42 10524 bytes
SHA-256: 016c28ef6a19cc291babc0cc43d40d490ab3257cf133b04b4aa7be91f084a71e

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