Malicious PDF — malware analysis report

Static analysis result for SHA-256 b59384aa567cb1d4…

MALICIOUS

PDF

82.5 KB Created: 2021-01-14 11:35:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: db2626b5b32f2dcf6996b91d486c30d1 SHA-1: 798f1ee0c53f61671a55af9fb58b96badb7b78ea SHA-256: b59384aa567cb1d4e7cd3305e17cf4cd79394992f0d23507c905f843d6ffe3d0
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'. ML classification and ClamAV also flagged the file as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further payloads.

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=adeptus+evangelion+v3+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393345/normal_5fae0efd30880.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxonavi/06nRih7/dibasic_sodium_phosphate_anhydrous_molecular_weight.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499023/normal_5fb2bd124367c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485699/normal_5fc0cf10ed4cc.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/cWiaIhg/wildlife_puzzles_1000_pieces.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385427/normal_5fad644c1859e.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/regegozumekoza/1930076245.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/angularjs_bootstrap_4_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/skype_7._35.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/nakilonizamezedova.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/endless_legend_beginner_guide_reddit.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_off00010594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10594 5324 bytes
SHA-256: 26362398288b7d64a919652ac85ae718771e7228af3044cc8bcbb03c83a01673
font_01_sfnt_off000117d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117D6 11248 bytes
SHA-256: f2b3e298297e50006730b092e3bea5af94dafce37ee029baa2223cca8f3326b6

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