Malicious PDF — malware analysis report

Static analysis result for SHA-256 2282c9791facec97…

MALICIOUS

PDF

78.3 KB Created: 2021-03-16 02:03:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 38344d2d5aa838e1ae53423ee2b16d3c SHA-1: 8e7e514343c810472cfa7fe77e3257f0d7ecf921 SHA-256: 2282c9791facec972319da3b8980d7906cffef3428075032c0e6b3de77766fb0
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing campaign. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to redirect users to phishing sites or download further malware.

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://botokaw.ru/strik?utm_term=maxi+cosi+pria+85+manual PDF link annotation
    • https://cdn.sqhk.co/nukunudakiju/OR38Fha/transparent_clock_weather_forecast_radar.pdfIn PDF document text
    • https://fupebabo.weebly.com/uploads/1/3/4/6/134601971/dobizimujodumetiniw.pdfIn PDF document text
    • http://tixokapine.mypressonline.com/29831759358.pdfIn PDF document text
    • https://xedasijaw.weebly.com/uploads/1/3/1/4/131453620/f5ae700c1.pdfIn PDF document text
    • http://lazirog.mywebcommunity.org/koponevoropigomoz.pdfIn PDF document text
    • https://cdn.sqhk.co/vefemenivu/d9rqhcI/66665439940.pdfIn PDF document text
    • https://jixatazibasuv.weebly.com/uploads/1/3/4/4/134402985/40f43.pdfIn PDF document text
    • https://cdn.sqhk.co/dabebasavus/ojethfd/bluffing_games_boardgamegeek.pdfIn PDF document text
    • https://cdn.sqhk.co/futogifoku/pTGhahj/nojewogomoda.pdfIn PDF document text
    • http://fesunasisodenod.getenjoyment.net/30063262249.pdfIn PDF document text
    • https://rirosivipoxutu.weebly.com/uploads/1/3/2/3/132302830/lolobexolirile.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/mukasa.pdfIn PDF document text
    • http://zikubuji.iblogger.org/cardo_scala_rider_q3_pairing.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/hjhogiE/pamugegokil.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/4iegijc/54915191411.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/work_from_home_computer_networking_jobs.pdfIn PDF document text
    • https://cdn.sqhk.co/gukisafuw/Hiigeig/halloween_makeup_look_mermaid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://medexode.atwebpages.com/como_superar_los_miedos_e_inseguridades.pdfIn PDF document text
    • http://sixusugiw.rf.gd/94289831276.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_off0000f3ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BA 5472 bytes
SHA-256: 05a3bc7374ab39a2b0b833aeee8a4642342f12b0bdf2955fea59ff0f12628a5f
font_01_sfnt_off00010653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10653 10704 bytes
SHA-256: b8215b0fe6b8f2529a2dbf54df2b28e3e698372abefd15f127ced5b49e56964c

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