Malicious PDF — malware analysis report

Static analysis result for SHA-256 dff1d3f57b345bbc…

MALICIOUS

PDF

117.9 KB Created: 2021-03-11 18:12:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: de14c3ba31af39ff50994e9ae3eb523a SHA-1: f5f5919daaebdc20e30a16ec537daa632d462951 SHA-256: dff1d3f57b345bbc952229ac661c2919d8e9ae4a93b48859e55c3df315a21e3d
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains numerous external URIs pointing to disposable hosting services, suggesting a phishing or malware distribution campaign. The presence of embedded JavaScript, though not fully analyzed due to obfuscation, likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 5

  • 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 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=husqvarna+350bt+leaf+blower+review PDF link annotation
    • https://cdn.sqhk.co/fagaxirupunu/geTjjYu/evacuation_plan_template_for_business.pdfIn PDF document text
    • https://cdn.sqhk.co/tidelefuzin/LifMuxX/xozotivowejoduzez.pdfIn PDF document text
    • http://tebapewulodafe.getenjoyment.net/shepherd_the_flock_of_god_april_2020.pdfIn PDF document text
    • https://biwawidojimu.weebly.com/uploads/1/3/4/6/134648839/8285fb49d31480.pdfIn PDF document text
    • https://wivepeweg.weebly.com/uploads/1/3/1/4/131455463/5664476.pdfIn PDF document text
    • https://cdn.sqhk.co/pubamegumox/jc7yn7B/xolelolebomuxovozigeki.pdfIn PDF document text
    • https://cdn.sqhk.co/goganededem/cAPuyoP/simple_model_release_form_australia.pdfIn PDF document text
    • http://xorimomupajo.scienceontheweb.net/whats_the_best_workouts_to_lose_weight.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464067/normal_602d978de4498.pdfIn PDF document text
    • https://cdn.sqhk.co/vizakifito/hg3Kjgj/modern_air_combat_team_match_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374372/normal_60418df0a5767.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401983/normal_600afd73e4108.pdfIn PDF document text
    • https://mibinataxufix.weebly.com/uploads/1/3/1/4/131438539/rupumibup-vubexetivufoto-vowan.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/bissell_proheat_2x_healthy_home_pet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_603cb08acf840.pdfIn PDF document text
    • http://wosozage.mypressonline.com/is_there_a_24_hour_walmart_open_near_me.pdfIn PDF document text
    • http://gatofupimekow.mywebcommunity.org/79173856153.pdfIn PDF document text
    • https://rezusoroporinon.weebly.com/uploads/1/3/2/6/132695427/1362046.pdfIn PDF document text
    • https://vuvitujenus.weebly.com/uploads/1/3/4/3/134305132/919812.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://posikin.myartsonline.com/libro_de_geometria_analitica_bachillerato_contestado.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/tojobopiravutopininife.pdfIn PDF document text
    • https://486bfeb6-87d8-40a3-812f-3449909c9139.filesusr.com/ugd/81b904_021cc2e95fe04d8a9984a7525c63597b.pdf?index=trueIn PDF document text
    • https://f33d1b56-f518-462b-b61f-c1b5c1ba661c.filesusr.com/ugd/1c44ce_abf5a922117848e68823ad67acc15308.pdf?index=trueIn PDF document text
    • https://b8436764-02b3-4471-8711-1e8fed235cf0.filesusr.com/ugd/3b3fbb_9a7ad3aaf2ce4186a27aa72087079b26.pdf?index=trueIn PDF document text
    • https://c2bc7a71-cb21-434c-84f6-8d2fc09ed56d.filesusr.com/ugd/03ae60_9d03a67efd76441c94792f01e3ebc62f.pdf?index=trueIn PDF document text
    • http://wadoromutisagar.myartsonline.com/suladusijumedemitu.pdfIn PDF document text
    • http://mojogoralil.onlinewebshop.net/garmin_forerunner_620_replacement_band.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17CDD 5572 bytes
SHA-256: fe2f23fea0d11a7f8487cebb5e1ae62e11d7885585bdf83a1423ae32b5d24b6a
font_01_sfnt_off00018ff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18FF7 10492 bytes
SHA-256: 97ab1eba0cbba7ed9ac1c90dd98f9b96a4f4f853a766929ed2299c41c54f543e
font_02_sfnt_off0001b428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B428 16076 bytes
SHA-256: 8ea7f1c1fa5cae84799308c3b5277d4d512d786787cd8f2796a1af00f3b64e48