Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd796eaf64a17e45…

MALICIOUS

PDF

73.0 KB Created: 2021-03-05 14:38:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 329e80d454e3b10de6dddb187d6c0bbe SHA-1: 2366a664bdadd338037c326eabdaa2937ac785bb SHA-256: fd796eaf64a17e4508a751424fdc042824446a13aa73a106ea7e0fd94875a609
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://vilenefex.ru/wix?keyword=chemistry+chapter+3+section+1+review+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489409/normal_602498da36c0e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481056/normal_5ff0ac9e738e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417129/normal_5fd880c2e3b92.pdfIn PDF document text
    • https://mologikonazo.weebly.com/uploads/1/3/4/7/134706863/xawusutivamijubel.pdfIn PDF document text
    • https://cdn.sqhk.co/mowukirew/HnggRix/lovemikekukomexire.pdfIn PDF document text
    • http://jaraxusej.iblogger.org/4986828262.pdfIn PDF document text
    • https://cdn.sqhk.co/pumevigatare/aAidnja/zevezisuxalebudi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456116/normal_5fffce3f5d9d5.pdfIn PDF document text
    • https://soguleta.weebly.com/uploads/1/3/4/3/134305846/nujini.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393514/normal_6040c039a3d10.pdfIn PDF document text
    • http://vakafubetax.iblogger.org/safipidumibonazadinajura.pdfIn PDF document text
    • https://delazodudiz.weebly.com/uploads/1/3/4/5/134591817/c93f10ad81.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://83f018a0-8e49-44f0-b57e-805e464a5f06.filesusr.com/ugd/10a4aa_3a48e6e230e0403183aef6a65aaae650.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/buwosevax/how_long_does_it_take_to_charge_plantronics_backbeat_fit_21.pdfIn PDF document text
    • http://bibobega.epizy.com/adblock_addon_firefox.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/kuzibugifinikix.pdfIn PDF document text
    • https://78905da9-dd21-4190-abaa-c894c042e703.filesusr.com/ugd/851c7c_d87a4656e1ca4586a69cf73e48b074d7.pdf?index=trueIn PDF document text
    • http://lenaxepejo.rf.gd/what_is_a_onyx_ring.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_off0000dd7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7F 5516 bytes
SHA-256: 313910adb89cb59efa5630cd13cbc5b06ebaa3501b4b8d01cc1bd598d43fa340
font_01_sfnt_off0000f033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF033 11848 bytes
SHA-256: 075397fbd175952aa20007b8823fe76c36e43fc73fc4b6d5858e79584d519451