Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a194001d99cae19…

MALICIOUS

PDF

69.9 KB Created: 2021-02-11 21:07:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9adf1b70e819c13678c2984e43d5ad7b SHA-1: 99ec76f2c6cfea14f396138e3a08d054b9d20e98 SHA-256: 2a194001d99cae197f6fedf8056e6ab6054bb37bdf1ac3bd1f24d8a5e719d97b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=simbu%20in%20aaa%20video%20songs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391909/normal_602083253b4be.pdfIn PDF document text
    • http://upgrade4me.com/wrong_turn_full_movie_isaiminio16xu.pdfIn PDF document text
    • http://chambrehub.xyz/bodoni_book_font84ez7.pdfIn PDF document text
    • http://revershjtb.site/99665973965s39w6.pdfIn PDF document text
    • http://maska-respirator.com/tupoboselewolrqfk2.pdfIn PDF document text
    • http://copyright-infringement.business/how_many_blocks_away_do_mobs_spawn93qeq.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzexesetaba/jYjcXgf/nalavotekaba.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/nrYNgca/giritikadizipoxinami.pdfIn PDF document text
    • https://cdn.sqhk.co/riragimi/f3lhbig/4993994347.pdfIn PDF document text
    • http://bossyonlinex.com/mugijivisugowufwqs9i.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/sugosubexez/bafg_amt_hamburg_formblatt_5.pdfIn PDF document text
    • http://kerakuwopimarin.epizy.com/factoring_practice_worksheet_answer.pdfIn PDF document text
    • http://zopezotudesod.rf.gd/vaxeberekezizis.pdfIn PDF document text
    • http://gulaguwiz.rf.gd/gafajejixoxaxuvewugokem.pdfIn PDF document text
    • http://vabojiseg.epizy.com/wedding_march_instrumental.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_off0000d3dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3DC 5320 bytes
SHA-256: 4058887ee2d4a6c088ae185bf2ca6046e320e2d1f4ae73f0cbb45f943559affe
font_01_sfnt_off0000e5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E0 10940 bytes
SHA-256: 53b3e4b218f0503adae42096f525997379bb3e34bd196d44068367d4377cd036