Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b2c409f4dcc61e7…

MALICIOUS

PDF

75.0 KB Created: 2021-02-28 05:13:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 88040bb1fdfe6b68b82787cea439a106 SHA-1: 1db3a6054b687808e53517a0f7454f5ba65d4da6 SHA-256: 2b2c409f4dcc61e77b5b0e2099f87ffd652521b18c6e7c0002a2868a8f926906
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/123?utm_term=what+is+e3+error+in+ac PDF link annotation
    • http://paypallsecurity.com/vamoduwew0xxn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472198/normal_5fee3178a9b3d.pdfIn PDF document text
    • http://vehicleusains.com/12156038404wv8b7.pdfIn PDF document text
    • https://cdn.sqhk.co/fezifoxunif/hewlgcO/rutadedef.pdfIn PDF document text
    • http://crispyset.online/kunezemip7l9nx.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/8gehbji/50031717885.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/iaY6yhc/268918516.pdfIn PDF document text
    • http://catsism.com/komatsu_15_forklift_service_manualkngbf.pdfIn PDF document text
    • https://xixozikitep.weebly.com/uploads/1/3/4/0/134097223/lukevaxejid.pdfIn PDF document text
    • http://legalvictory.group/80265300797iqkdv.pdfIn PDF document text
    • https://cdn.sqhk.co/gosukutusu/Fhhziia/ripiroteduru.pdfIn PDF document text
    • https://dojilosadokadog.weebly.com/uploads/1/3/4/8/134890500/jerufor_jiladudofoxoja_wubibipib.pdfIn PDF document text
    • https://xuxukiworizep.weebly.com/uploads/1/3/4/7/134723333/2753437.pdfIn PDF document text
    • https://cdn.sqhk.co/dolitife/hgiid4p/bupolemotuxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/telasebisu/pelevumuxogifevafumu.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_off0000e94a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94A 5032 bytes
SHA-256: 7e00cafc64fa136466093c2756a45cb43b32df7a7d00144550198146fc7e15db
font_01_sfnt_off0000fa6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6C 10784 bytes
SHA-256: 4d56698b5ec3ce31f423600ecc3b22bba25ff550c576f4a5609f1048e8d18c40