Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a370fa93a6749e…

MALICIOUS

PDF

47.6 KB Created: 2021-05-24 07:21:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6aba912b88c732468f9b6ce5c7a176f7 SHA-1: d3567968f23c73aae7bf5a0ad903a2ffacf0235c SHA-256: d9a370fa93a6749ef2dc8a965f207ac7df28f9f7ce7ba5f472567e5f8af067e3
160 Risk Score

Malware Insights

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

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or free item generators. The document body and heuristics indicate a lure to exploit user interest in free items, leading them to potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious redirector chain designed to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7552

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/479516143/minecraft-java-edition-redeem-code-free-2021-game-hack In PDF document text
    • http://firesafetyservices.biz/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-tiktok-views-trial_GM835599320.pdfIn PDF document text
    • http://firesafetyservices.biz/images/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000037a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37A4 24648 bytes
SHA-256: a92a11c6b2fd2c4486adba873ee968695c18bccad27efc44deb5b1435f08a2b5
font_01_sfnt_off00006f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F64 7936 bytes
SHA-256: 218d53b68bdddb064f6fba4be822d5b3725ed1cef1a3b42796a8dd99c4a62f4e
font_02_sfnt_off0000888e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888E 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000971b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x971B 18824 bytes
SHA-256: 3e84327372ede1fb0dd75240746e2dc46639f78069d280fe972667d8e0b4261e

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