Malicious PDF — malware analysis report

Static analysis result for SHA-256 779cc17829e50d07…

MALICIOUS

PDF

76.6 KB Created: 2020-12-28 05:30:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2c926fbf4b99557bd109e45f78d15334 SHA-1: 6e880fb903a1cc865712dd2161e49a9128a73803 SHA-256: 779cc17829e50d079253e7c337af152cab0ed12bd6a8801d1d6f5e83105c3a0f
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains numerous embedded links, many of which point to external PDF files hosted on disposable domains. The primary URL, 'https://traffine.ru/strik?utm_term=flippy+bottle+extreme+online', is identified as a malicious redirector. The structure suggests a link farm designed to lead users to malicious content, likely for phishing or malware delivery. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffine.ru/strik?utm_term=flippy+bottle+extreme+online In PDF document text
    • https://dugesadodi.weebly.com/uploads/1/3/1/1/131164249/010ceeaf450cd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_5fe7d8e03263a.pdfIn PDF document text
    • https://mexasazage.weebly.com/uploads/1/3/4/5/134513067/bulokasomazepe-vowutoxomuda-pewidazafagij-rozixa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366628/normal_5fbcca0f65749.pdfIn PDF document text
    • https://someradajisifu.weebly.com/uploads/1/3/4/6/134669983/6849487.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/VjSGibv/67111559837.pdfIn PDF document text
    • https://varozuwibudod.weebly.com/uploads/1/3/4/3/134327914/f74261c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459929/normal_5fb2c3ce1ff6d.pdfIn PDF document text
    • https://fekogekakoxoki.weebly.com/uploads/1/3/4/6/134625435/rurijepa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376125/normal_5fc0c04827f40.pdfIn PDF document text
    • https://jinobodusere.weebly.com/uploads/1/3/4/7/134722577/df926.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD325 4840 bytes
SHA-256: 7c70668db034db5adfa22b43a24fb1fc78eb4eb52a2d5c06d330b4198f81bf08
font_01_sfnt_off0000e38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE38A 2188 bytes
SHA-256: b672ed32057b611730be586441f877a1b206a236b78c91f14c1564547a1c78c7
font_02_sfnt_off0000ed90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED90 9912 bytes
SHA-256: bf7cd7aaeb4b6d3a3519565f9b0331321874d01089a865b3f5d980bfa4ce1d98
font_03_sfnt_off00010faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAA 16144 bytes
SHA-256: f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d