Malicious PDF — malware analysis report

Static analysis result for SHA-256 d904797ae786c38d…

MALICIOUS

PDF

47.5 KB Created: 2021-06-10 15:09:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dbcc09742fac2268f44cd25d6b081c8b SHA-1: 74f7a864cd5463eab2587a99f0b7977d4b2c0345 SHA-256: d904797ae786c38dbe224d393a3c7859561d22d16e9de7d59a4ddf3e04582cb5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure and known malicious domains, disguised as lures for game hacks and free items. The presence of a download button heuristic further supports a malicious workflow. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest it's designed to redirect users to potentially harmful content or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/roblox-accessories-for-free-game-hack In PDF document text
    • http://dygmotors.com.py/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • http://dygmotors.com.py/images/compte-roblox-hack_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/tiktok-free-2021-likes_GM835599320.pdfIn PDF document text
    • http://dygmotors.com.py/images/how-to-hack-super-hero-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/hack-roblox-jailbreak-2021-new_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://dygmotors.com.py/images/100-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://dygmotors.com.py/images/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://dygmotors.com.py/images/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://dygmotors.com.py/images/body-roblox_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://dygmotors.com.py/images/coin-master-free-online-game_GM406889139.pdfIn PDF document text
    • http://dygmotors.com.py/images/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://dygmotors.com.py/images/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/is-free-robux-real_GM431946152.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_004_off000051dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51DD 26800 bytes
SHA-256: 4a52dc3718aa393803a25317bce152b3488c6d5196a280b7764adcd12ac7ba9f
font_01_sfnt_off00008d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D91 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off0000978e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x978E 18068 bytes
SHA-256: a0888faaba03d4e5ac33cf4816a84312fa3fe8a46d5675d87d99e6bc5ea5c91b

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