Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd91afdbcfed224b…

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 23:20:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 68e20c1f11852d5d093fda581aff149d SHA-1: 35eef123ab37bea398e9282bb6f983d5d4c99ea1 SHA-256: bd91afdbcfed224b5478f689e95cd3ea35260840a81a2af7e7ff49dc2f8d2d70
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free items. The ML classifier strongly indicated maliciousness, and the presence of numerous redirector links confirms a malicious workflow. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lure users to potentially malicious content or downloads.

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/479516143/best-free-minecraft-server-hosting-game-hack In PDF document text
    • http://dshikr.ru/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://dshikr.ru/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/roblox-gang_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000489a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x489A 25288 bytes
SHA-256: db36549dcdf395a4a87943c4d695177944ede788aacff3ed56b73db097d0140d
font_01_sfnt_off00008157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8157 18328 bytes
SHA-256: 0b2d28431e5234c57104fb234e5f183f246f5a4819408a3d571d7ab08b18c1e5

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