Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c376a0986f62eb…

MALICIOUS

PDF

40.3 KB Created: 2021-05-13 03:33:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6460a88f48021828fd6224b0b79f265e SHA-1: 52b748d1d84808b266924d3cf52e2a164ebf1787 SHA-256: b7c376a0986f62ebb0e7acfd522e98cd1c94fb7f99750e180e8ce458c49a5faa
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, masquerading as a game hack generator. The heuristic firings indicate a critical risk due to the malicious redirector and a lure for game hacks. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link within the document.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/roblox-robux-hack-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003204.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3204 28408 bytes
SHA-256: 4a2a4dcf0bfa34c5355bd0dae02cdd8df541666c925fe7d295d77079d1eb40d0
font_01_sfnt_off000070d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D8 3200 bytes
SHA-256: 73092b0d3d45e1b72e17f45448db7e991d5e0805980504251a6d52b0d0e2cbe8
font_02_sfnt_off00007bdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BDF 18320 bytes
SHA-256: fa424f86a9ddd472d540fc30f07119be4b576a9306b5f7bb82c207f2bb92a2b4

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