Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3dd40b490448c5c…

MALICIOUS

PDF

38.9 KB Created: 2021-05-16 00:38:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 11e7cfdd5e621007ea2194035ba1831e SHA-1: 51bc91e077b02c4ab948affecd8dfc33fc299946 SHA-256: b3dd40b490448c5c2de80e037fb580c665d0549708da81ff0708ece8f698c4b9
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a 'Roblox Apocalypse Rising Hack' and a 'free generator', directing users to a known malicious redirector URL. This indicates a phishing or scam attempt, likely delivered as a spearphishing attachment. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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/roblox-apocalypse-rising-hack-game-hack In 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_003_off00003706.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3706 28220 bytes
SHA-256: 78f74583eb5c1a8ff5d6909aaea5ec568f4d4e732704634d604fcb10df5b39c0
font_01_sfnt_off000074a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A5 18948 bytes
SHA-256: c81671b47ab5e7fd402c3d16699df98b51b9b699798839031d1ff55305a8bd80

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