Malicious PDF — malware analysis report

Static analysis result for SHA-256 8795368f54adfc08…

MALICIOUS

PDF

27.5 KB Created: 2021-06-29 16:47:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fd8461083a78d205b54e21e1b9cfd2af SHA-1: d2e7b07eecdf09c0581f07f6aaa9a7a141ff3b1d SHA-256: 8795368f54adfc08c303663d0dc6db942e73dc50e80f84508f772bda3b060743
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links pointing to known malicious redirector infrastructure, specifically advertising a 'free generator / game hack' for Coin Master. The document body reinforces this lure with a call-to-action to access the generator. While no scripts were extracted, the embedded links and the nature of the lure strongly suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0328

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 http://netcdn.co/app/406889139/free-spin-in-coin-master-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_001_off000016e2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16E2 22996 bytes
SHA-256: 70cc8e8e08ca566fedea82c0d8b2b57475f17b94ba78be157366cbe897c0904e
font_01_sfnt_off00004a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A7F 18176 bytes
SHA-256: 71b70257de5307608e837e84baf22dba423b8b66b5dab801bbeeadacf24eb5d5

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