Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7b29f5522abcfa…

MALICIOUS

PDF

62.9 KB Created: 2020-12-19 01:12:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 880ff53c2866d395a172cfff8d11a4fa SHA-1: 5ececb35e5fe0d400a8e2a6202d8cf0062616038 SHA-256: 4f7b29f5522abcfa50339cf3530e4cac5a471616d9e683f0ff8b1a918b368f81
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ggtraff.ru', which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest it's designed to lure users to a compromised site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=strike+force+kitty+league+hacked
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5fa1315dee110.pdf
    • https://fidojosamesevuf.weebly.com/uploads/1/3/4/5/134594598/633957b800.pdf
    • https://cdn-cms.f-static.net/uploads/4417024/normal_5fd638a60cf78.pdf
    • https://roturusuwanowus.weebly.com/uploads/1/3/4/3/134363773/15eb11716b376ac.pdf
    • https://neverazu.weebly.com/uploads/1/3/4/9/134901342/677069.pdf
    • https://tisatazufewuvo.weebly.com/uploads/1/3/1/1/131163687/sukojiz_leludebasitov_riwatexopixo_joteligaj.pdf
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/fogom_gonofup.pdf
    • https://sutulozutujak.weebly.com/uploads/1/3/4/8/134884412/b94829fc0be902.pdf
    • https://xafineker.weebly.com/uploads/1/3/4/7/134701786/1574480.pdf
    • https://cdn-cms.f-static.net/uploads/4410722/normal_5fd7aad865174.pdf
    • https://cdn-cms.f-static.net/uploads/4369522/normal_5f88e6b38e10c.pdf
    • https://cdn-cms.f-static.net/uploads/4374177/normal_5fbbd32bcee03.pdf
    • https://cdn-cms.f-static.net/uploads/4409420/normal_5fbbeb9587be9.pdf
    • https://lififotepul.weebly.com/uploads/1/3/4/3/134339298/4591539.pdf
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/950631.pdf
    • https://cdn-cms.f-static.net/uploads/4452374/normal_5fda64a2c9bd4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9d2.bin
ab8662f537414e826793421270ae0ac13c9f505630d54b6320cd0d76bc66fa72
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9D2 5376 bytes
font_01_sfnt_off0000cc21.bin
d7b687242b86a906bee0621e0cc4063254ac120f295f404d20451465edd66c12
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC21 10028 bytes