Malicious PDF — malware analysis report

Static analysis result for SHA-256 73d62ed1b62b19ee…

MALICIOUS

PDF

70.2 KB Created: 2021-03-01 19:16:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8e91e00673e0d007dc722a771f8b7845 SHA-1: 26acd5822413040bc788058d9ff3dee5fc008952 SHA-256: 73d62ed1b62b19ee54b2bf428a0fbf73d801b89300e81133cf74674a344f673c
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://golowaki.ru/award?keyword=how+to+convert+decimal+ratio+into+whole+number PDF link annotation
    • https://lopowizuxo.weebly.com/uploads/1/3/4/4/134438001/5065ce585f47.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479460/normal_600222e22b9fc.pdfIn PDF document text
    • https://lejegibovijidup.weebly.com/uploads/1/3/1/4/131438293/regifiwosipisepowes.pdfIn PDF document text
    • https://sagagokibifaku.weebly.com/uploads/1/3/4/6/134625973/9978344e66.pdfIn PDF document text
    • https://cdn.sqhk.co/powitaxixu/bm3b23P/52221177075.pdfIn PDF document text
    • http://merutakozuxonu.22web.org/18536901754.pdfIn PDF document text
    • https://najovukuno.weebly.com/uploads/1/3/1/4/131453374/mifasajelok.pdfIn PDF document text
    • http://wifunagidoli.mypressonline.com/tecumseh_5hp_engine_shaft_size.pdfIn PDF document text
    • https://cdn.sqhk.co/musutalivun/uhgkogf/5734874071.pdfIn PDF document text
    • https://govepemifowen.weebly.com/uploads/1/3/4/3/134372812/8338975.pdfIn PDF document text
    • https://cdn.sqhk.co/zanudiwageg/0iggjia/bounce_the_ball_back.pdfIn PDF document text
    • https://cdn.sqhk.co/vitikitema/haOUbab/kuxexo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gakilasefit.myartsonline.com/new_holland_tc30_pto_problems.pdfIn PDF document text
    • http://zazuxidavo.rf.gd/afro_soul_music_2018.pdfIn PDF document text
    • http://bodegifu.atwebpages.com/polycom_soundstation_2_non_expandable.pdfIn PDF document text
    • http://gusutawidike.epizy.com/mubodojukudelawaboje.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_off0000d70c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70C 5256 bytes
SHA-256: 1d141ecd354bae5c845cb2daf90e0c3fc567c151c908a3e102e058d8e5057d09
font_01_sfnt_off0000e8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CD 10196 bytes
SHA-256: 2fadc9c1c523dfaf7e4308233c951c2fc08ead4fce742fc7dacbbb06030631c2