Malicious PDF — malware analysis report

Static analysis result for SHA-256 150869584c11f1d6…

MALICIOUS

PDF

71.2 KB Created: 2021-03-02 08:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: c27072625c917649a14b1f81c88ea423 SHA-1: c3b632820dbcdf5f4ee633d1181117f5877aa6c1 SHA-256: 150869584c11f1d6c2e0e3c654e7ebaecbfec2d0cd1b7d1fc6ac3c8fc3a5a2fd
96 Risk Score

Malware Insights

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

The PDF contains embedded URLs and heuristic firings indicating malicious intent, specifically related to phishing and malware distribution. The ML classifier and ClamAV detection strongly suggest maliciousness. The document body, though heavily obfuscated, contains references to 'gta games apk', aligning with the observed URLs that also point to game-related downloads, likely as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/wix?keyword=gta+games+apk PDF link annotation
    • http://ruvogodozipabiv.scienceontheweb.net/xibefeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382627/normal_6028227ed0db2.pdfIn PDF document text
    • http://junumidutuzakox.getenjoyment.net/xavuvimonoximefonodup.pdfIn PDF document text
    • https://cdn.sqhk.co/danopefasuf/lsjjQzT/xusubexame.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/hhejg7d/picture_collage_maker_for_pc_free_download.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/16315408191.pdfIn PDF document text
    • https://cdn.sqhk.co/vusopukov/109igr0/car_simulator_2_hack_game_download.pdfIn PDF document text
    • http://upsbox.ru/lafinidobajakoxofieyq70.pdfIn PDF document text
    • http://dipazekonowa.mypressonline.com/42172725543.pdfIn PDF document text
    • http://shmelev.pro/after_we_fell0tkqd.pdfIn PDF document text
    • https://cdn.sqhk.co/zimuteraf/10gfiea/stickman_falling_mod_apk.pdfIn PDF document text
    • http://tryporte.xyz/gilajotudazefosokiq8q5b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/timituvupame/kesikisaturuxobobukesena.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/carers_allowance_form_under_16.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/xolusolopodugow.pdfIn PDF document text
    • http://pazalijof.epizy.com/genebetoso.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/moxowagulinesu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB38 5108 bytes
SHA-256: 8f82d0b9994dbcd83587e2160c4617a8f0e041255a2e9fc2e16d1f78faa31e7f
font_01_sfnt_off0000ec98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC98 10428 bytes
SHA-256: fd09627f5082713c0a3839094d91e3ce16213885b32abd2063b9af82c1be8d38

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