Malicious PDF — malware analysis report

Static analysis result for SHA-256 a99fb1b909541b04…

MALICIOUS

PDF

45.7 KB Created: 2021-05-15 08:05:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4af61fae41f734b62de8717e55852f05 SHA-1: ee51cbbb31f99907d6b107a488b00e0668001332 SHA-256: a99fb1b909541b0408158ba0c1ef7be3c872047288fed5ce00c6ec568a6af8ca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as offers for game hacks and free currency. The heuristic firings indicate that these links are intended to lead users to malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/coin-master-free-spins-and-free-coins-game-hack In PDF document text
    • http://badboybiteaway.de/images/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://badboybiteaway.de/images/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • http://badboybiteaway.de/images/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://badboybiteaway.de/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://badboybiteaway.de/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://badboybiteaway.de/images/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/getrobux-now_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/fake-robux-codes_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b5b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B5B 25776 bytes
SHA-256: 6ee72f7a73fb31ada9367c3a427fdd8c44d19f3caca601ea24be05f4b7d08f75
font_01_sfnt_off000086c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C0 2864 bytes
SHA-256: 2ff8fc2d0b13bbf76803e0aec6fec818bb1ebc858cf6d44893a212f5f90c5415
font_02_sfnt_off0000909d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909D 18060 bytes
SHA-256: 7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7

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