Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddce98aeb40972e6…

MALICIOUS

PDF

72.7 KB Created: 2021-02-15 00:00:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bd131c2a0ca59f63c5161807607aa7ae SHA-1: 6c66d098a7e951c635157fc4eb65fd345e65d969 SHA-256: ddce98aeb40972e6dcc66a87091278c1ad07e8e8266119570967448fb57624e7
186 Risk Score

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://jacksth.ru/wix?keyword=yalla+shoot+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445868/normal_5fd68bb6bd271.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365576/normal_6014b065ebe72.pdfIn PDF document text
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/rulilakikegi_rukoteg_metopojisalaxi_xafuzogugoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/foropogajag/e1ihZPZ/xexitubuf.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/Spigieh/bodyweight_rotator_cuff_exercises.pdfIn PDF document text
    • https://cdn.sqhk.co/patizuruf/ihidgci/3d_overlay_photo_blender_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/chcia6n/jolt_definition_physics.pdfIn PDF document text
    • https://kisuwirabavaruz.weebly.com/uploads/1/3/3/9/133999170/a0062d4f4059.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455176/normal_5fc70c9fbbcfd.pdfIn PDF document text
    • https://cdn.sqhk.co/zubuwebofe/MjeYE2y/vivuxixinojodepisogog.pdfIn PDF document text
    • https://saxenivimagi.weebly.com/uploads/1/3/0/8/130813604/rigeweru-tatetux-sirubesuzasaja.pdfIn PDF document text
    • https://vedaputenada.weebly.com/uploads/1/3/5/3/135318287/4f7e37.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470678/normal_5ff92accb4a2a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://witopovuketoj.epizy.com/dushman_movie_song_1971.pdfIn PDF document text
    • http://selifesupenikiv.epizy.com/gathering_dreams_income_report.pdfIn PDF document text
    • http://gozozofufeb.rf.gd/21304054571.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_off0000c755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC755 4836 bytes
SHA-256: e7d507c474c4a7427a5b7e0f6a48f354cc1bf63f37db43b137fca4a034b18d53
font_01_sfnt_off0000d7c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C6 10208 bytes
SHA-256: 7e0a50b767dc765efb73de6c45a3f6929a5dd3079537a74d09a409025ee41331
font_02_sfnt_off0000fae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE2 17748 bytes
SHA-256: e941c4069697861fefec30c9d540fb91bd81ad56e26116f1dce0c36dc1551ed3

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