Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ff79f8e4f0fccc…

MALICIOUS

PDF

73.1 KB Created: 2021-03-01 00:49:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 37613af0ba1e9dcd97ae0c4c6576c0c2 SHA-1: ef5b98848d9ac8c7dc599f01649428b84842ef3b SHA-256: 24ff79f8e4f0fccc4f07c94a8af5bd3f55b557d2c6fd0d8fd74115cc90c7f0e0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://xezojetit.ru/award?keyword=how+to+express+love+to+your+husband PDF link annotation
    • https://cdn.sqhk.co/wudajelu/9ifgfih/best_pvp_decks_duel_links.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385235/normal_602039472e83f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489035/normal_601a2ee6931f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448719/normal_601e72a4dbef3.pdfIn PDF document text
    • http://tasonilevibinu.22web.org/scenario_analysis_in_risk_management_theory_and_practice_in_finance.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusetoteji/hgjpoud/portal_3d_model_thingiverse.pdfIn PDF document text
    • https://foderojev.weebly.com/uploads/1/3/4/0/134041652/jevumevobetofisowum.pdfIn PDF document text
    • https://koruguliduni.weebly.com/uploads/1/3/4/8/134896859/jukeve-dowabapete-razusutexavat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369146/normal_5ffa7ae707ef3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381738/normal_5fe134dbbeaed.pdfIn PDF document text
    • https://tafubevodila.weebly.com/uploads/1/3/4/0/134016741/998219.pdfIn PDF document text
    • http://fuzisadudag.22web.org/648560132.pdfIn PDF document text
    • http://kawolamekepe.22web.org/aegan_tamil_movie_single_part.pdfIn PDF document text
    • https://cdn.sqhk.co/wosepimi/wYmhbji/44544529255.pdfIn PDF document text
    • https://cdn.sqhk.co/dojarodawiw/fkifgia/lusej.pdfIn PDF document text
    • https://ninisezidopif.weebly.com/uploads/1/3/5/3/135391617/7762504.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://veramok.rf.gd/graco_4ever_4-in-1_convertible_car_seat_target.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_off0000e1d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D2 5472 bytes
SHA-256: 8b89ead3558570693a9ad16c226f78d9f14f91fa2b993f655a65ca78c7e682c8
font_01_sfnt_off0000f474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF474 10176 bytes
SHA-256: 17db3248cae7b9e6c1861a3439a12abad7fa70fc006e0e98ba0b179218db44da