Malicious PDF — malware analysis report

Static analysis result for SHA-256 74cae24cf5ef4dca…

MALICIOUS

PDF

70.2 KB Created: 2021-02-26 04:20:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 37333df6d065c2fe2c1de0900fed0665 SHA-1: 3592a5cd02869a2cbd43b491f56fc0253c89bee4 SHA-256: 74cae24cf5ef4dcac2e026b0121e309d715a577f8f7010452622c2def84447ce
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/award?keyword=what+is+involved+in+a+final+building+inspection PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447912/normal_5fec310eb152b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445573/normal_6021cc1fd60fe.pdfIn PDF document text
    • https://kuwuxezito.weebly.com/uploads/1/3/6/0/136090431/bekukagaxubodax_viwuxidosu_fozojufavuke_kebasagiba.pdfIn PDF document text
    • https://naxosunibeg.weebly.com/uploads/1/3/4/6/134676516/kolexozawuwuwuku.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/hiWiiie/pba_bowling_playoffs_results.pdfIn PDF document text
    • https://tigafuxofezez.weebly.com/uploads/1/3/4/3/134363272/7137873.pdfIn PDF document text
    • https://salupoxegiras.weebly.com/uploads/1/3/5/9/135961269/xizagivewejanova.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365525/normal_5ff9716da7ccb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445119/normal_6015a204b3921.pdfIn PDF document text
    • https://zulozagadome.weebly.com/uploads/1/3/4/3/134318764/ripud_rapojegop.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/67940173197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385014/normal_6019d949b21e6.pdfIn PDF document text
    • https://xutafutixon.weebly.com/uploads/1/3/4/5/134576274/149458.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD53E 5532 bytes
SHA-256: b8bef3588384be1c78ebe9d67b2276c0d1f088cbf1133bd00ca2831e4711b3f0
font_01_sfnt_off0000e822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE822 10456 bytes
SHA-256: 1e6508e8e38d3706e6c7f9c39e343b3823b1d76aa4c7150cc3037b15108eba65