Malicious PDF — malware analysis report

Static analysis result for SHA-256 63bebfdadf633a25…

MALICIOUS

PDF

77.6 KB Created: 2021-02-23 23:25:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1ae85569c6bbdacd8ec11bbe44130eb4 SHA-1: 38b89c2e36b363c88f44ea8e78908eae7ec9f73e SHA-256: 63bebfdadf633a2568586d185a5cfd17b5859dd1c075332bce167659c7d8b594
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://maypoin.ru/123?utm_term=how+to+fix+heater+switch PDF link annotation
    • https://cdn.sqhk.co/sileluzorupo/hhghpjb/wsdot_i_90_pass_cameras.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490739/normal_5fd7995cced7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461766/normal_6019b31b85a3e.pdfIn PDF document text
    • https://cdn.sqhk.co/pememobuwir/iXDXeQg/leap_of_faith_water_slide_slow_motion.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452385/normal_5ffbe5b00cf02.pdfIn PDF document text
    • https://dojobojijiwum.weebly.com/uploads/1/3/2/6/132681334/2193052.pdfIn PDF document text
    • https://gopadafuwidu.weebly.com/uploads/1/3/0/7/130740623/lalikarof-zisawexaxuka-xawegagifon-kaxafem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469351/normal_602cf25500afb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386334/normal_600fd3c7b416e.pdfIn PDF document text
    • https://cdn.sqhk.co/migukosodaza/faYMGIx/talusukuxape.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465394/normal_601cdd1fb6dde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408188/normal_60186c64d8517.pdfIn PDF document text
    • https://xuropowupenuba.weebly.com/uploads/1/3/0/8/130813979/busumuga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423454/normal_602e714c18357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476272/normal_602df102a1136.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/xG9hfij/best_free_crossword_puzzle_app_for_ios.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jogiweni.epizy.com/vampire_diaries_quotes_katherine.pdfIn PDF document text
    • http://bipaxoxibiva.rf.gd/wallet_app_iphone.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_off0000f44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44E 5060 bytes
SHA-256: 861ffce4092371c4439ad833ad812cf812b176723550840372a68fc09b8828e6
font_01_sfnt_off00010591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10591 10596 bytes
SHA-256: 2e414af4be6bd55c3054fa0de8d60447f7597c906ef206ad0101ecb869181f86