Malicious PDF — malware analysis report

Static analysis result for SHA-256 d341cc36ada8cfa8…

MALICIOUS

PDF

40.0 KB Created: 2021-05-16 19:30:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a2f45e47aed0961ca2284ee65a76f811 SHA-1: ac4f675c0ccdbf49f0ca743191a3041021c7bc4d SHA-256: d341cc36ada8cfa8fd2d1292743c4d19c4e90bc4fcaf612109e5218a309f5c2f
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a redirector link, specifically pointing to a 'free generator / game hack' lure. The document body, though partially corrupted, contains text related to obtaining free Robux and includes the same malicious URL. This indicates a phishing attempt designed to trick users into visiting a malicious site, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0134

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-fast-and-easy-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_002_off00002fb0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FB0 26380 bytes
SHA-256: adcb36b912615d1f84b8aaf550fd87a23910ce6c899f0a21d7a15a47c6808e64
font_01_sfnt_off00006cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAE 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00007955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7955 18864 bytes
SHA-256: 264ac3d9ee16189788a918c90b00fec891485e046f110455159a23ab28eb8c09

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