Malicious PDF — malware analysis report

Static analysis result for SHA-256 f984ebc992eddbeb…

MALICIOUS

PDF

37.7 KB Created: 2021-05-13 12:36:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c0ef01718a8f847a8da38e4901bf6309 SHA-1: b84c5592cf76976a688e6dac47915b708aacaf63 SHA-256: f984ebc992eddbeb9be888aa024e43c9bec3a1b816be8d3d52b6d4da182c3b95
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically advertising a 'free generator / game hack'. The document body and metadata indicate it was generated by wkhtmltopdf, suggesting it might be a crafted lure. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt, likely delivered as an attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/431946152/apps-that-give-you-free-robux-game-hack In PDF document text
    • https://www.micIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000031c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31C2 27984 bytes
SHA-256: 26bf6979beb7b8db161d2e3f915ea61e24f3d72ed5414f9be97cab8de259039b
font_01_sfnt_off00006faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAF 19084 bytes
SHA-256: 837a639daa187fc447bd118567dc66774ab6c99c19a83daf34219dbfdd013636

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