Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc589dd8d7785fbf…

MALICIOUS

PDF

68.9 KB Created: 2021-02-23 22:57:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1ca474b0e148ffcc4dd0b032e69d04ee SHA-1: a9f405af1ef67bdc78cd23ac2ba7b4db508825e7 SHA-256: fc589dd8d7785fbf0ccb0b74c21ae881406c4d8a0fc3d89886bade22a1af7b1a
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://baarspo.ru/wb?keyword=clean%20filter%20on%20frigidaire%20dehumidifier%20ffad7033r1 PDF link annotation
    • https://cdn.sqhk.co/janawezexoj/gfhbjbU/classic_chess_books.pdfIn PDF document text
    • https://gorogonib.weebly.com/uploads/1/3/0/7/130775466/3004326.pdfIn PDF document text
    • https://cdn.sqhk.co/lunosupi/3EQgehc/beat_the_boss_2_cheats.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/2e418.pdfIn PDF document text
    • https://cdn.sqhk.co/ratobomebal/TKidjhS/wivudonove.pdfIn PDF document text
    • https://cdn.sqhk.co/fosojatesog/hd1yAEb/78824034823.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwetebep/fib2zii/94661458146.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/hagiggq/get_likes_comments_and_followers_on_instagram.pdfIn PDF document text
    • https://lafefozusut.weebly.com/uploads/1/3/4/5/134597047/87e5dfb7ab2.pdfIn PDF document text
    • https://puxikatekeji.weebly.com/uploads/1/3/2/6/132681322/f0b97458bce3558.pdfIn PDF document text
    • https://cdn.sqhk.co/mokevesin/7jehjDc/the_crusades_through_arab_eyes_chapter_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/bDjglic/6965341917.pdfIn PDF document text
    • https://tozikogok.weebly.com/uploads/1/3/5/3/135330875/59f6ed8c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jajoxutevo.epizy.com/xejavuzisometanorinipoj.pdfIn PDF document text
    • http://desorebo.epizy.com/tefezi.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_off0000d084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD084 5484 bytes
SHA-256: 06dc09de8a1970793da6e8543a0b5c45366ddf38eb4ed4eacb81b46982c2d578
font_01_sfnt_off0000e30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30E 10472 bytes
SHA-256: 97729c6df97c74b46699c6653bc366791f252750f641835a02b7d971d29b86c5