Malicious PDF — malware analysis report

Static analysis result for SHA-256 3912ecd8e5971d95…

MALICIOUS

PDF

69.6 KB Created: 2021-01-11 08:41:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: d05d158b66ec021be23dbeafaa87ad41 SHA-1: 68e0d0b034dc54c7565a43b821cdc4afdddd41b6 SHA-256: 3912ecd8e5971d9579713bc8b22bd12932a51c3de7bc3323ec392f57f4924b65
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'. ClamAV also detected it as 'Pdf.Phishing.Trojan'. The ML classifier strongly flagged it as malicious. While no scripts were explicitly extracted, the presence of a malicious URL indicates an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/aws?utm_term=multiple+alleles+rabbits+worksheet+answers In PDF document text
    • https://static.s123-cdn-static.com/uploads/4454172/normal_5fd06ffcf0ef2.pdfIn PDF document text
    • https://site-1178425.mozfiles.com/files/1178425/v_moda_boom_pro_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408984/normal_5ff92d04ac8fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379029/normal_5fd1c1c1bd750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452835/normal_5fc116916c979.pdfIn PDF document text
    • https://cdn.sqhk.co/waboperunut/eOibaha/truth_or_dare_game_questions_for_girlfriend.pdfIn PDF document text
    • https://site-1174269.mozfiles.com/files/1174269/download_reina_theme_park_1994.pdfIn PDF document text
    • https://site-1176253.mozfiles.com/files/1176253/maxizotovesivodibetetud.pdfIn PDF document text
    • https://cdn.sqhk.co/vakamuzawa/SOlVO8i/super_spider_archer_stickman_bow.pdfIn PDF document text
    • https://site-1179780.mozfiles.com/files/1179780/19672734145.pdfIn PDF document text
    • https://site-1166752.mozfiles.com/files/1166752/pirates_of_everseas_halloween_event.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/tarizirefevifab/solid_6141_cccam.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/maplestory_global_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/best_admin_template_html5.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/bellota_font_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/tegira.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_off0000d597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD597 5208 bytes
SHA-256: e793f0682fba72051d58cbfa623468ec6d4550193359623e945cf0579b89a76a
font_01_sfnt_off0000e757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE757 9900 bytes
SHA-256: 07d54ca47a506dfb986c55ebb753b1c3923ad1e3a203eff4456f1ab34ca082cc

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