Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ae4db65119a140…

MALICIOUS

PDF

66.1 KB Created: 2021-01-08 11:48:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 7c6a8dc84c494ee60dbef73c3f472f0f SHA-1: 7dba0ec4259d76a2183b166763bbdfcc6d18057c SHA-256: f2ae4db65119a140ee13a3165f4d49ca508150f140dc7e18b088a20ecec5a3ea
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, appears to reference game-related terms, suggesting a lure for users seeking cheats or hacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/123?utm_term=plazma+burst+2+arcadeprehacks PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449788/normal_5fa4014f6cfbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386606/normal_5fae221d49e42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387701/normal_5fab6ce180e9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445742/normal_5fbb6e6148d83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391302/normal_5fd7fb941f55a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5fc017b7a6ed7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402951/normal_5fea3ec031b75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419225/normal_5fc3dae46bd29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453719/normal_5ff7ad6b6d2df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370307/normal_5f8b07baf02dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428039/normal_5fabd4f68bae3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368250/normal_5f888cdfb13b8.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/e2727366-8b86-47b4-b644-59941827dd82/tokyo_afterschool_summoners_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fa26df1-91e8-4c29-a52c-eec4a73ada4c/soccer_balls_in_fortnite_battle_royale.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_off0000c4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4BF 5700 bytes
SHA-256: 30f274279cba6d12b4c3159d6fad378fb8060e9dbfc6b1c8683b225fcd9e63df
font_01_sfnt_off0000d7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F2 10576 bytes
SHA-256: 24223605e1fae6c0636bc88f3f9803e85eaba02784d5d6ace553189e41ce3395