Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d43bea7e34859ab…

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 17:01:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b938a0b454ee11aa86e0c11d6d34b73d SHA-1: 50c593c85091eed446147f55900bd0638c1953cc SHA-256: 2d43bea7e34859abf5f2cbb8f252249e7f6481ec2c91af7bb15e4d4fdd256367
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The embedded URL is also flagged as a malicious redirector. While no scripts were extracted, the document's content and heuristics strongly suggest a phishing attempt to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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-robux-for-free-2021-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_off00003420.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3420 28984 bytes
SHA-256: 64819a4d04579018ee86320cb9b3ad31d952367218c7ab2ab4322657fe1f36e4
font_01_sfnt_off000075d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D6 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000827e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827E 18684 bytes
SHA-256: 65f445f0396e54760dd2a1edc1744209422bc48f29c35ea74a9bcb72e79f8b06

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