Malicious PDF — malware analysis report

Static analysis result for SHA-256 039c8ed72cfc9631…

MALICIOUS

PDF

43.0 KB Created: 2021-05-14 04:02:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c1a6db45694e734461fd970dde35c41 SHA-1: 5c32431f565b98b07f451a78abacb901196d887e SHA-256: 039c8ed72cfc963137a72c5b73edbe0e717dda30b36f001edef9b3eef366c635
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and sites offering game hacks and free currency, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9630

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-tiradas-gratis-link-game-hack In PDF document text
    • http://depilhome-fr.fr/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://depilhome-fr.fr/images/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://depilhome-fr.fr/images/robux-match_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004762.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4762 23940 bytes
SHA-256: 311aa6700150b9966c061adb4d7f5922db83a789b7ebf12d52691c76d389ad71
font_01_sfnt_off00007cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDB 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000868d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x868D 17888 bytes
SHA-256: 7e3d0d6e3169ec9d1b4a39f1a8de513868e09ebca0bcabadf274b5e058877262

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