Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffb48e7abc028b8c…

MALICIOUS

PDF

35.5 KB Created: 2021-05-22 00:12:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6edf94e92d456bb4fdeeee08f6df39f8 SHA-1: b1bb00705d5067fb14891bb33525775607e88938 SHA-256: ffb48e7abc028b8ca6a17f968c9450759add80caf3f9ead0e284b21cd4eeccbf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to scam-related content, specifically lures for 'free Robux' or 'game hacks'. The heuristic firings confirm these links point to malicious redirector infrastructure. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest an attempt to trick users into visiting malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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/how-to-get-free-robux-no-scam-game-hack In PDF document text
    • https://verstricktundzugenaeht.com/images/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/roblox-gang_GM431946152.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002dbb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DBB 25228 bytes
SHA-256: c946cc2ded0731138754ba9f03c158cb1d87f5671f0a9c27438ffda24c653b58
font_01_sfnt_off000067a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A6 18768 bytes
SHA-256: d1f42346170e568709c452458a32d8325f9466b63e26828f6615071549d089d8

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