Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba7ae52876c921f…

MALICIOUS

PDF

80.3 KB Created: 2021-02-24 06:01:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a17f78e2537dbed2a735638cb49636eb SHA-1: b39834ae0c55e2a9f99b698572ca36c8f6872c9f SHA-256: 3ba7ae52876c921f5a471a7ad7f715b74d93ffaf327293e285a5efa6da0e8739
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://baarspo.ru/aws?utm_term=bissell+2x+revolution+pet+pro+vacuum PDF link annotation
    • https://wutupebepa.weebly.com/uploads/1/3/3/9/133997315/fifobanegenug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473656/normal_602e288f2da97.pdfIn PDF document text
    • https://duzajitoji.weebly.com/uploads/1/3/2/6/132680922/8875777.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/ihZbXLF/word_trip_level_493.pdfIn PDF document text
    • https://cdn.sqhk.co/lagazowasobo/IhahbGn/70166542913.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448339/normal_600f1907586be.pdfIn PDF document text
    • https://cdn.sqhk.co/pasudajuwesa/Ogchfgd/66794425446.pdfIn PDF document text
    • https://nijusalelazi.weebly.com/uploads/1/3/4/8/134875584/zifimujejopij_vekatanejovaze.pdfIn PDF document text
    • https://nupetumagapet.weebly.com/uploads/1/3/1/8/131859993/26a3053979d2.pdfIn PDF document text
    • https://xatuzagu.weebly.com/uploads/1/3/0/7/130738971/toxesigulu.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/jiqgdQe/bmobile_customer_care_trinidad.pdfIn PDF document text
    • https://cdn.sqhk.co/novitovikor/he2gjll/wipezitasometufizija.pdfIn PDF document text
    • https://tiwedipetubed.weebly.com/uploads/1/3/2/8/132816066/dulajemejevixod-farirodu-saguvogiboji-xokokumozutife.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449777/normal_5fcbd172041ba.pdfIn PDF document text
    • http://sparzha.club/wexiniwutobuzagafaxas9g6g.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_off0000fded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDED 5388 bytes
SHA-256: 6abe987d60f4cea7d869a89cd310887e23e77c17cc20b38988c4b93b7b9d1ef9
font_01_sfnt_off0001103c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1103C 10636 bytes
SHA-256: 8d73167986b1b92706cfdc4308fe7427546ac103fefaafed2672c71a3f7476f6