Malicious PDF — malware analysis report

Static analysis result for SHA-256 02b416041587d654…

MALICIOUS

PDF

114.9 KB Created: 2021-01-18 00:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2b9f38677f203b3c8fbb1c434647cb35 SHA-1: 4d9763988108b2ebc7d8c3a54caafe84bdd41dac SHA-256: 02b416041587d6540dae6cdeb39da87604ddfd98b9e5a8e883ba01832a109344
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The ML classifier and ClamAV also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the redirector suggest an attempt to lure the user to a malicious site, likely for phishing or to download further malware. The document body appears to be malformed or obfuscated, preventing a clear understanding of its content beyond the metadata.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/wb?keyword=tic%20tac%20toe%20game%20java%20swing In PDF document text
    • https://cdn.sqhk.co/jaxugaveg/ehjcqnS/jisopagiwo.pdfIn PDF document text
    • https://cdn.sqhk.co/rilixuzewiv/rJcggzD/fun_run_3_multiplayer_racing_games.pdfIn PDF document text
    • https://cdn.sqhk.co/leburogutu/ejcjahg/free_wallpapers_for_samsung_a20.pdfIn PDF document text
    • https://cdn.sqhk.co/wirujurumugi/Ujaieha/36835493860.pdfIn PDF document text
    • https://cdn.sqhk.co/suvezadamut/jbhihjg/degirowabosasipon.pdfIn PDF document text
    • https://cdn.sqhk.co/koroxofusino/7qmhVgf/povojijijijebamejifaso.pdfIn PDF document text
    • http://xenuven.22web.org/ciencia_definicion_y_caracteristicas.pdfIn PDF document text
    • https://site-1175287.mozfiles.com/files/1175287/kewesofirixi.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/dujepav/kudipeve.pdfIn PDF document text
    • http://buxebawimiro.epizy.com/jupotizida.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/23429905598.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/luciano_shipping_bronx.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/alt_balaji_app_video_er.pdfIn PDF document text
    • http://tejusadesivuti.epizy.com/animation_composer_after_effects_2019_free.pdfIn PDF document text
    • http://pabaxekuvo.rf.gd/autodesk_trueview_2017.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_off00016def.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DEF 5168 bytes
SHA-256: 6e00526909d1c743681f0dfcd08191dc7d20e5c5e78db528b787a9ed7d4fa983
font_01_sfnt_off00017f91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17F91 12800 bytes
SHA-256: d2f3197c60edb84848d7f508563b05a085ee81536165a6616879e14e6aab6e50
font_02_sfnt_off0001a93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A93C 16096 bytes
SHA-256: 67fbccdfc1673e1f05ec910dc9703220f17c769013ad8a8c66a56881809b461c

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