Malicious PDF — malware analysis report

Static analysis result for SHA-256 337327e2cfea5743…

MALICIOUS

PDF

120.7 KB Created: 2021-03-10 19:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e2fd0516598d55b58b2328606b11206 SHA-1: dd539176b9b1c1446f4adb88a8efe441b01f9657 SHA-256: 337327e2cfea5743499e72d62b0e151fb8eaeb04bc1a75f5bd1d8f5687b140b9
126 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed as a link farm, likely to distribute malware or conduct phishing. The embedded URLs point to suspicious domains, suggesting a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://soxebez.ru/wix?keyword=escudo+de+mexico+png
    • https://cdn.sqhk.co/jexozumumanu/iiDfhda/dusexoxefidade.pdf
    • https://tabekemaw.weebly.com/uploads/1/3/0/8/130874329/65e60c81b21b7e7.pdf
    • https://kutebebi.weebly.com/uploads/1/3/4/5/134528954/889915c.pdf
    • https://cdn-cms.f-static.net/uploads/4443815/normal_603621597ae4c.pdf
    • https://kozewofedira.weebly.com/uploads/1/3/4/8/134899359/vixaparisodibiselet.pdf
    • https://jigugupidutugi.weebly.com/uploads/1/3/0/8/130813301/c7502bd2eae.pdf
    • https://static.s123-cdn-static.com/uploads/4474462/normal_5ff35cc22ff92.pdf
    • https://feruzizujuvete.weebly.com/uploads/1/3/0/7/130775768/806118.pdf
    • http://kafojiv.iblogger.org/empire_total_war_strategy_guide.pdf
    • https://sapuzexa.weebly.com/uploads/1/3/5/3/135348006/711585687001.pdf
    • https://static.s123-cdn-static.com/uploads/4375894/normal_5feea3cfc3c8b.pdf
    • https://cdn.sqhk.co/saxuxaka/rijd70m/1888_national_geographic_magazine_for_sale.pdf
    • https://pobejatu.weebly.com/uploads/1/3/2/7/132741278/delanomikupotalivo.pdf
    • https://static.s123-cdn-static.com/uploads/4448094/normal_5feebc6b13e48.pdf
    • https://cdn.sqhk.co/dolafita/XjjWihI/braun_alarm_clock_amazon_uk.pdf
    • https://static.s123-cdn-static.com/uploads/4406166/normal_5fc92f77a60bd.pdf
    • https://libidipoxojab.weebly.com/uploads/1/3/5/9/135981854/mazed-goguxesaxokus-toxon.pdf
    • https://cdn.sqhk.co/xisalaximel/pjeX1kG/83755594449.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3384a96e-16f7-4d0f-9bdf-a56646ec190c/komet.pdf
    • http://nagajawonusagu.epizy.com/wuzulutivoxarurusogifujil.pdf
    • https://uploads.strikinglycdn.com/files/8b673b1d-2107-4bd4-a3a8-c4e6306274c2/bopugasasiwifemolegagepo.pdf
    • http://segalemu.epizy.com/50636406579.pdf
    • http://menimilerawapo.rf.gd/agile_construction_project_management.pdf
    • http://vonanovab.epizy.com/kumubadofinupezem.pdf
    • https://uploads.strikinglycdn.com/files/ebcb65ea-b55c-43db-ae8c-ce129823c859/l_death_note_logo_font.pdf
    • https://uploads.strikinglycdn.com/files/6c4d4307-f68e-4a8a-9fef-d6c72b7f1a88/65429695893.pdf
    • https://uploads.strikinglycdn.com/files/ad22fb08-9f3e-4d92-8e79-04f5a5e41640/18551454626.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019856.bin
df0178e9e6f1a2c2765604b2af887845539cf4e38da9604260fa3b0c04c849a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19856 5080 bytes
font_01_sfnt_off0001a997.bin
154c8e290e29abf023756d14de77cf628f39e220183c484962f22228c6901a32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A997 13440 bytes

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