Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ced37b38bd2e069…

MALICIOUS

PDF

37.7 KB Created: 2021-05-19 19:16:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 72fbaf5c623869428195bc509d8f6ee0 SHA-1: 7a713c6cdaa041106ee63e6de0a4b1a12ab0e63b SHA-256: 3ced37b38bd2e0698ed582c3f5923e0efb2c8aabec3aef9ac5407fa2e063f0a4
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'free generator / game hack' lure. The document body also contains the same URL and a call-to-action phrase, reinforcing the phishing attempt. While no scripts were directly extracted, the nature of the redirector suggests it likely leads to a further stage of malicious activity, such as credential harvesting or malware download.

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/infinite-robux-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_off0000327b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x327B 28244 bytes
SHA-256: c7f68f0630aeaa3cb7de089353af2beaebac31539054f023bdb5c2b8d8a82bc7
font_01_sfnt_off00007287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7287 18076 bytes
SHA-256: c10dc34708056d46d1c5f2f844ba93123ab91eb2f7cf1dd8665e6f652890d1b0

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