Malicious PDF — malware analysis report

Static analysis result for SHA-256 fac173cc374f5a4e…

MALICIOUS

PDF

38.5 KB Created: 2021-05-10 16:33:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b7533e690ecdd7d77b33691f84d024dd SHA-1: eae32f98e946e0b3fdf250ce8ddbf2a0b65e81d8 SHA-256: fac173cc374f5a4ed9329c7e6acdff9465c79ecd2d128f225d097c57faea2671
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a specific external URI pointing to potentially malicious content related to game hacks and cheats. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous links suggests an attempt to redirect users to malicious sites. Although no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a lure for users to click through to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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/406889139/free-shields-coin-master-game-hack In PDF document text
    • https://vstarnippers.com/images/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://vstarnippers.com/images/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/get-free-coin-master_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/roblox-free-robux-com_GM431946152.pdfIn 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_off00003f33.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F33 24092 bytes
SHA-256: be75955e0b38faf97febb6d2466667a3b4b655eb447a1e276d2ba4cedd9f3602
font_01_sfnt_off00007507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7507 18124 bytes
SHA-256: e085952d3720952a51e878c41e5b5c7a5f24b6488949d11870729d067ad6b009

Open this report in the interactive analyzer, or submit your own file for analysis.