Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f6e9dabee0de96c…

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 21:15:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 13eea80572d709581aca778d787391ad SHA-1: 9bfb0fdcdb8fe4ec707489051278ad21ee23c98e SHA-256: 9f6e9dabee0de96c61b37b13548e86d33866b0e0af52a20291fbc83c89b55346
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a URL that is also flagged as malicious infrastructure. The document body, though partially corrupted, contains text related to 'free spins' and 'game hack', reinforcing the lure. The embedded URLs suggest a pattern of redirecting users to potentially malicious PDF files hosted on external domains.

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/get-2021-free-spins-on-coin-master-game-hack In PDF document text
    • http://per-bittner.de/images/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.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_off00004a46.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A46 24420 bytes
SHA-256: cd0c0e8984036df0890238c79ce677bc497fd05d2d29f15f37d3d53fa7fc7eb6
font_01_sfnt_off00008281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8281 18288 bytes
SHA-256: 882c1e08e977239ecedb915e199b33d6770e962ab42e0389920a883bc9e88219

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