Malicious PDF — malware analysis report

Static analysis result for SHA-256 691ef51bf1d70f44…

MALICIOUS

PDF

79.0 KB Created: 2021-02-09 23:16:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 2b6b36f2959abc8aa060064d0640c3f2 SHA-1: 29a7e3a7590a075dfdab6e118882ecb3f0325737 SHA-256: 691ef51bf1d70f44e73f939effcf2de37bbb3ac5564500fe6fd5abd3b33c1a4b
96 Risk Score

Malware Insights

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

The file is a PDF that uses the lure of 'Firewall protection free software' to entice users. It contains numerous embedded URLs, one of which is `https://jottigo.ru/aws?utm_term=firewall+protection+free+software`, likely serving as a download or redirection point for malicious content. ClamAV detection and ML classification strongly indicate malicious intent, consistent with a phishing or trojan delivery mechanism.

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://jottigo.ru/aws?utm_term=firewall+protection+free+software PDF link annotation
    • http://meriline.store/39637289458hlrll.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/cibjenH/92070202580.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/dVjbgeI/sewaxofofaxasu.pdfIn PDF document text
    • https://cdn.sqhk.co/nugofonavuf/idjjorN/ufo_enemy_unknown_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/DjcgiRp/siren_head_game_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/lokovipazal/KHhdIzb/word_crush_level_410_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/feluxolid/ggiRich/xujemaxi.pdfIn PDF document text
    • https://cdn.sqhk.co/pugirunosamo/cgihcha/51069633483.pdfIn PDF document text
    • https://cdn.sqhk.co/digiwejasipu/djb0iha/mirobudapat.pdfIn PDF document text
    • https://cdn.sqhk.co/wesaduleb/boMh3q7/kilifu.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/e5Qvgc8/64994060494.pdfIn PDF document text
    • https://cdn.sqhk.co/tazurusubiz/jetzPgi/rock_band_guitar_hero_xbox_one.pdfIn PDF document text
    • https://cdn.sqhk.co/jidelugob/jBW9Eie/extreme_landings_mod_apk_3._6._3.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/fuzafuzeruwit/85503408373.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/mefifobaxapalafijupokuzes.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/neurological_examination_format.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/visamatigamukuv.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/xofid.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/1611626535.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_off0000f99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF99E 5056 bytes
SHA-256: 092b0dff863377efe50514f98c3ace998c1c830b6f0047a8872847cce203d59b
font_01_sfnt_off00010af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF6 10572 bytes
SHA-256: 7299eb1099de4ca4769b433e0a34634293639fea5fd4ad70c8e23600aff7ed09

Open this report in the interactive analyzer, or submit your own file for analysis.