Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ff49bd7f58a53f…

MALICIOUS

PDF

80.1 KB Created: 2021-02-26 11:41:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 8b4c9e23160329f94025205a8aa9c661 SHA-1: 36e19d2aa64dd91ba1e25f878ed13bb20b558e40 SHA-256: e7ff49bd7f58a53f2c7be8e125ebafddba1b769b5dadf0345d7f06d4c142bba9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

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://gimoguvi.ru/strik?utm_term=organic+chemistry+2+cheat+sheet+pdf PDF link annotation
    • http://xulodol.mygamesonline.org/15954869161.pdfIn PDF document text
    • https://cdn.sqhk.co/revinoxu/iht2ihd/bang_dream_girls_band_party_wiki.pdfIn PDF document text
    • http://itgermany.net/best_price_dyson_cinetic_big_ball_animal_plus_allergy9xwlf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457592/normal_5fd5f69075fa5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406464/normal_5ffb8d5e37b16.pdfIn PDF document text
    • http://sehq.xyz/about_last_night_imdb_parents_guide3xy7e.pdfIn PDF document text
    • http://dosaxixapaxa.medianewsonline.com/ryobi_12_drill_press_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422628/normal_5fdd9138dc228.pdfIn PDF document text
    • http://wotukujis.sportsontheweb.net/sipugaguzu.pdfIn PDF document text
    • http://mojadejazisapa.sportsontheweb.net/jotul_f_600_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419218/normal_60003e897a24e.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/jigc2vX/sword_hitbox_extender.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387590/normal_5fe5d1806c7c9.pdfIn PDF document text
    • https://cdn.sqhk.co/lubometusoz/ioQhfp5/kiko_del_chavo_del_8_murio_2017.pdfIn PDF document text
    • http://ostanni.fun/american_big_picture_b1huf9v.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fubavinexazixo.onlinewebshop.net/posapudovanofonemesipo.pdfIn PDF document text
    • http://bijabigapaj.rf.gd/2368383159.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9C 5476 bytes
SHA-256: f5a7c19d75e446f05f5351ea4e4cb345b7d1428317fdef7cd23d5195065cdd96
font_01_sfnt_off0000fe16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE16 12296 bytes
SHA-256: bb989b3936102d45aed6a3798ffc2063b2504eea5a05b1b99d59766f93df9482
font_02_sfnt_off0001255f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1255F 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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