Malicious PDF — malware analysis report

Static analysis result for SHA-256 9426afc2f2b0de0b…

MALICIOUS

PDF

49.0 KB Created: 2020-10-03 13:47:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bb894c0f36bc4310dca2691f3472e176 SHA-1: 621a2fbdd1eb5bf8998f277fad66fcdb46c3e46f SHA-256: 9426afc2f2b0de0b165ec55658dd07a1c5203b192258a950c6ddd0a2572f3d5b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=principios+del+entrenamiento+deporti In PDF document text
    • http://files.teamroyalty1990.com/uploads/1/3/2/7/132712234/6436658.pdfIn PDF document text
    • http://files.militaryveteranproject.org/uploads/1/3/1/3/131380213/bcae94.pdfIn PDF document text
    • http://supete.lydburynorthvillageshop.co.uk/uploads/1/3/0/7/130775118/ditoragiluwoti-jemuse.pdfIn PDF document text
    • https://site-1036855.mozfiles.com/files/1036855/vebegonewe.pdfIn PDF document text
    • https://site-1037843.mozfiles.com/files/1037843/47355551655.pdfIn PDF document text
    • https://site-1036772.mozfiles.com/files/1036772/69222589767.pdfIn PDF document text
    • https://site-1039834.mozfiles.com/files/1039834/94252961439.pdfIn PDF document text
    • https://site-1036971.mozfiles.com/files/1036971/fatewiw.pdfIn PDF document text
    • http://befovu.dralisonpt.com/uploads/1/3/1/4/131406352/4de741ef8.pdfIn PDF document text
    • http://files.wisconsinmomtribe.com/uploads/1/3/2/6/132695244/wixugejelekizoxul.pdfIn PDF document text
    • http://files.sainttheresaattleboro.org/uploads/1/3/1/1/131163736/1078f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7952/8348/files/77716725621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6713/8460/files/j_stroke_rowing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/2447/5299/files/60459912662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9981/4040/files/which_president_said_i_am_not_a_crook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6480/2982/files/neutralization_problems_worksheet_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D4 5008 bytes
SHA-256: fa15dc188e3843f08e7516edbacbd7ebc759a77471df237d43a7ca7f3a244cc1
font_01_sfnt_off000083ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83AD 10760 bytes
SHA-256: 2adc1cea9741383e541a39dc8dd096c2dc8a0df5428de96984b319ce65f1fdec
font_02_sfnt_off0000a6b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6B8 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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