Malicious PDF — malware analysis report

Static analysis result for SHA-256 21c0a6600c100451…

MALICIOUS

PDF

222.6 KB Created: 2020-11-17 12:18:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9b6a6a04dc055aca3721d72a2753859f SHA-1: d197fea707b61e3bd1b5dfa6e212ed9711826722 SHA-256: 21c0a6600c10045127ab30b9bef39e647a0079bd441539eb63f1f5aebacc0883
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. The embedded URL is likely intended to lure the user into clicking and visiting a site that hosts malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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=indian+film+stars+photos In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403824/normal_5fad78ebe90da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416792/normal_5fa19f0914e33.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/5315003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453754/normal_5fb3061f78935.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460983/normal_5fa997cdadd6b.pdfIn PDF document text
    • https://ranerenonosojib.weebly.com/uploads/1/3/1/4/131483420/terejoj.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/dotivaf/35420150390.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/19368434492.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/62698332624.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/kva_to_amps_calculator_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/podixabivurosifetija.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/articulos_de_hernia_discal_cervical.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_off000334e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x334E5 5216 bytes
SHA-256: 793cf7ac4235bd3b86af6e3b30b25e7de86029ca1f28dbb09d3d0a85a0ac9dc8
font_01_sfnt_off0003467d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3467D 11668 bytes
SHA-256: 12bba461605262b0afb085c2a24b62c6cbc3acc7a26f49b183e4f582525d8656