Malicious PDF — malware analysis report

Static analysis result for SHA-256 5659970533e3c2f6…

MALICIOUS

PDF

75.1 KB Created: 2021-03-02 18:31:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 751dd40921bc156725ee1f6e61f163a6 SHA-1: d72689ddd77b7618409bd5f5c72a678d605c73e5 SHA-256: 5659970533e3c2f6a70502918ca29d9adebfb38a92af3b83dd67ebcc0973eeb9
166 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, suggesting it is part of a link farm designed to redirect users to malicious content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to decrypt a password-protected archive, a common tactic to bypass gateway security. The ML classifier and ClamAV detection strongly indicate malicious intent.

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ponafet.ru/wix?keyword=math+in+focus+grade+2+think+central PDF link annotation
    • https://cdn.sqhk.co/jigitovewuk/ij9b7if/monkey_s_mask_movie_online.pdfIn PDF document text
    • http://marketes.pro/61111551868grtof.pdfIn PDF document text
    • https://sudopefizumizer.weebly.com/uploads/1/3/1/3/131383323/5201228.pdfIn PDF document text
    • https://xukafubisek.weebly.com/uploads/1/3/4/2/134265855/8521794.pdfIn PDF document text
    • http://organize.shop/how_to_change_time_on_acurite_clock7eqj4.pdfIn PDF document text
    • http://mowefopovog.mywebcommunity.org/is_road_to_hana_dangerous_reddit.pdfIn PDF document text
    • http://xufamorazogubov.sportsontheweb.net/7_years_lyrics.pdfIn PDF document text
    • http://wumomotetidofe.getenjoyment.net/9146127351.pdfIn PDF document text
    • https://vawuzusafut.weebly.com/uploads/1/3/4/8/134863851/burapezuno.pdfIn PDF document text
    • https://cdn.sqhk.co/wozejodes/8Cjijcn/91328794812.pdfIn PDF document text
    • http://riniwodifole.medianewsonline.com/discuss_the_salient_features_of_romantic_poetry.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/jbLhcja/teposemik.pdfIn PDF document text
    • https://liberiloro.weebly.com/uploads/1/3/4/5/134589576/tifagarazazom.pdfIn PDF document text
    • http://muzoc.xyz/songs_justin_bieberapfei.pdfIn PDF document text
    • https://cdn.sqhk.co/vatopibar/cjhhaNM/kung_fu_street_food.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faxiruvud.myartsonline.com/hairspray_script_mti.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_off0000e80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80F 5484 bytes
SHA-256: 0f1341cb0d215776281173fdb01f1154de314466fd9b09b1aa3ff1ecd69cefe5
font_01_sfnt_off0000fac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC1 10748 bytes
SHA-256: 6d4f87930df169232e2bfd05d142e1d3a361b2682f9afb287660f376574c2a4a

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