Malicious PDF — malware analysis report

Static analysis result for SHA-256 078148e9360eb118…

MALICIOUS

PDF

64.2 KB Created: 2020-12-22 02:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 82a1aceb1162b143b5cc097ef161804e SHA-1: 5b19fee6cf759b988426c55a94db822369fdabed SHA-256: 078148e9360eb118c106978b1cb79919dbd74c9de34a57dd9f995553b233427a
184 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to a known malicious domain, ggtraff.ru, which is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure for a game download, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://ggtraff.ru/aws?utm_term=terraria+1.+3+android++free In PDF document text
    • https://punotajevi.weebly.com/uploads/1/3/4/2/134266109/dujopubu_pelozaz_busid.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/bd0d7.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/riwegetalavenuwulu.pdfIn PDF document text
    • https://kojovade.weebly.com/uploads/1/3/4/6/134681743/xubasafivifanesimeru.pdfIn PDF document text
    • https://sijanobodebalu.weebly.com/uploads/1/3/4/6/134639398/dd0d508.pdfIn PDF document text
    • https://letolonenuxe.weebly.com/uploads/1/3/4/0/134095956/subazumesapup_gemisasifav_tumudomipajabog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc4d58cab79f442f242bf92/t/5fcdbfcb5d2e6f3bda5c9da0/1607319500475/vajujutobofenem.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6f6e56339345018512de0/t/5fcebc9d788d7c4f39bcb9b6/1607384223864/ryan_solomon_ninja_warrior_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/223d21d1-5203-4b98-b6f1-d4fd0a027868/45863787430.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/806b4769-3acf-42eb-8b33-585f5e2b6aa7/zeruzuxane.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_off0000b9e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9E0 4888 bytes
SHA-256: b311ebc07e79686dfdba07b5c4b3fa18e398ba436737a5379637ac00a34220c9
font_01_sfnt_off0000ca9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA9E 13520 bytes
SHA-256: 9375709ebfc0ed227af40eea547586c68ea8726baa93c219e6f442a7d7cf3295

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