Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae369d1985cc2273…

MALICIOUS

PDF

69.6 KB Created: 2020-11-28 01:56:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 50967fc695aa4eeafdd3383d9c4f54b3 SHA-1: 8c0a7144b24dfa58551620c7ff6c09e9956a7134 SHA-256: ae369d1985cc2273eb688b385af6e0648e7eee3faad0d593774e32819a38ae6e
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, including a known malicious redirector at `ggtraff.ru`. The heuristic `PDF_SEO_LINK_FARM` indicates a large number of links, suggesting an attempt to distribute traffic or host malicious content across multiple domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=pipe+stress+analysis+report+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4394066/normal_5f9559b8ed3f0.pdfIn PDF document text
    • https://wilujogid.weebly.com/uploads/1/3/4/3/134347442/vofaralodapola_zopowebuwe_varaju_jurol.pdfIn PDF document text
    • https://pusazaninad.weebly.com/uploads/1/3/4/3/134358808/9978577.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495387/normal_5fbef997daf36.pdfIn PDF document text
    • https://topodomero.weebly.com/uploads/1/3/2/6/132696018/kuzadixepuparuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446401/normal_5f9fdcec4db4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5fade216a0973.pdfIn PDF document text
    • https://pusazaninad.weebly.com/uploads/1/3/4/3/134358808/5933820.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/latakusobolugovodu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384299/normal_5fa297831a38e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455681/normal_5fa0af2771c3c.pdfIn PDF document text
    • https://zagusopiv.weebly.com/uploads/1/3/4/2/134234894/fikuwifot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392869/normal_5fbcab42ae471.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf79c602-9041-42eb-a4ac-994633ab16c9/rupevag.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_off0000d209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD209 5140 bytes
SHA-256: 434a128d64521a31a1928da4fe4a592610a55d64828f4f41cb2ac78128bbb17d
font_01_sfnt_off0000e39b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39B 11336 bytes
SHA-256: 65cc2f6d7cf33f184b028a552f15e286d5d1a1e305a8fc4f14971840d05f7281

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