Malicious PDF — malware analysis report

Static analysis result for SHA-256 de956ae0b1e55569…

MALICIOUS

PDF

30.0 KB Created: 2021-07-19 05:33:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5c14cb92ac0832473eafd2da096562b9 SHA-1: 7ddd95dfd9ea2035daad68c6432d77f941821631 SHA-256: de956ae0b1e555692534cb7d88a0e1b8b80f6b4236d86fae9c2cf15eabf4548d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic indicating it links to a malicious redirector disguised as a game hack generator. The document body reinforces this with a prominent "CLICK HERE TO ACCESS COIN MASTER GENERATOR" call to action, directly linking to the malicious URL. While no scripts were extracted, the PDF's structure and embedded URL strongly suggest a phishing or scam attempt designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0560

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.tw/app/406889139/master-coin-free-spin-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000234c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x234C 22308 bytes
SHA-256: d5a548c5833ccecc3eb1487588cde3e277dfa41462e6caf3c93c2bac7f03075f
font_01_sfnt_off0000550c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x550C 17884 bytes
SHA-256: 2eace5707960ab6674c345fc5925bb74d79b72c9d0e947ec779627780b9711cb

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