Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7648a13a08e9be4…

MALICIOUS

PDF

42.1 KB Created: 2021-05-12 23:54:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 081b6c8008343dcc1adaa8c75ac6a93c SHA-1: d5de6850d9907bf2a15c9cfba995a5170d1546ab SHA-256: a7648a13a08e9be49acc530abf5f707e267dad2feb81aad3b35d5f4815accdcf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The document body and embedded links strongly suggest the intent is to drive users to external sites that likely host further malicious content or scams. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/best-site-for-free-coin-master-free-spin-link-game-hack In PDF document text
    • http://firesafetyservices.biz/images/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-online_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/roblox-top_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/roblox-verification_GM431946152.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_003_off000049c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C4 24684 bytes
SHA-256: 21b965fc14eabd7b0968981587ba0b723f4e19e822754b86809576057d0b7cc4
font_01_sfnt_off0000824c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824C 18272 bytes
SHA-256: ca1d5c85fdffad6772495688e388105cc3e45c07940918e965146369a91d2d3c

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