Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f380785075e5485…

MALICIOUS

PDF

34.9 KB Created: 2021-07-19 02:37:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 52877ff5f7a792373c27846660d3ba31 SHA-1: 235b739d518a471391ec1cd3eebb160199a21999 SHA-256: 7f380785075e5485c8e0fa8c04585fc29ad24918b279f089540a6de05a1bf2f1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that lead to redirectors and other PDFs, all related to game hacks and free currency. The heuristic firings confirm these links point to malicious redirector infrastructure. The document body text explicitly mentions 'Free Spins On Coin Master' and 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', reinforcing the lure. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/free-spins-on-coin-master-game-hack In PDF document text
    • https://gafaseo.com/images/free-robux-website_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://gafaseo.com/images/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • https://gafaseo.com/images/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://gafaseo.com/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://gafaseo.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://gafaseo.com/images/minecraft-hacker-skin_GM479516143.pdfIn 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_off000033e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33E4 23064 bytes
SHA-256: 76bf2790102242f08c226077b41332c8b9fb0c47c9ef4c5bdf157ea8f75d7cb7
font_01_sfnt_off000067d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D8 17884 bytes
SHA-256: addbd5428a422ca7211e94293fed3a4f98c85d5f6337328d4d3623e90d90c649

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