Malicious PDF — malware analysis report

Static analysis result for SHA-256 262366edd54386aa…

MALICIOUS

PDF

82.1 KB Created: 2021-05-16 20:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d83fadb9d11cffb0e38c1fd852d03f34 SHA-1: d501e2bffaac7cf43ea7a98570d020983595dc56 SHA-256: 262366edd54386aa046a7bff370c345a849cd818a9c92a7f7686c81617081418
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to host malicious content or phishing pages. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the structure and URL patterns are consistent with phishing or malware distribution campaigns.

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://kuzutuzo.ru/strik?utm_term=cost+of+premiere+pro+in+india PDF link annotation
    • http://viputixezererej.66ghz.com/madres_solas_pilar_cernuda.pdfIn PDF document text
    • http://reduslim-shop.website/55313760684n1ik.pdfIn PDF document text
    • http://indital.space/identifying_topic_and_main_idea_worksheetsg1p8u.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • https://cdn.sqhk.co/loberutebe/6XiggiW/sojik.pdfIn PDF document text
    • https://cdn.sqhk.co/fidinananale/ejaBLig/17008194542.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/jbghhb5/lujimanodevutel.pdfIn PDF document text
    • http://xbet1.fun/evaluacin_de_la_estrategia_aprendizaje_basado_en_proyectos_._educacin_y_educadores621e2.pdfIn PDF document text
    • http://byseles.xyz/guest_speaker_certificate_templateygd68.pdfIn PDF document text
    • http://devgame.design/penujazukininanububemena40xh3.pdfIn PDF document text
    • https://cdn.sqhk.co/kinanekoxo/Aidihgh/paribogefifor.pdfIn PDF document text
    • http://natlab.ru/telivaxun7qu.pdfIn PDF document text
    • http://matcobzor.ru/boat_co-_ownership_agreement_template6u64k.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/Iiiz6gf/guess_the_running_man_cast.pdfIn PDF document text
    • http://watertea.space/vafuposesusiniziwigeferijsdb2.pdfIn PDF document text
    • http://goods-amzon.com/gamespot_cyberpunk_2077_review_controversyb60lr.pdfIn PDF document text
    • http://my-credit.info/zivejuvero3l6kw.pdfIn PDF document text
    • http://binadof.iblogger.org/89726539081.pdfIn PDF document text
    • http://fresh-ita.fun/656210409553wkpk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fukijudetoj.epizy.com/algorithme_informatique_tcs.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A9 5060 bytes
SHA-256: 6a61a4e79a89c4278db36f19cd00986e2b057f7452db3bf6b0f6f8ed772ccb00
font_01_sfnt_off000114c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114C1 11432 bytes
SHA-256: 3acc1282a8700f3b335a46393b0a7f0c97339fcdb94181f1e99c2ac5e5e56d20

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