Malicious PDF — malware analysis report

Static analysis result for SHA-256 b04d501c321a16b0…

MALICIOUS

PDF

46.0 KB Created: 2021-06-10 16:10:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ac5e9a5c3ad2036de589152a0160d0e6 SHA-1: 8ee55b12f1009cb284339653401cd265fdbfea25 SHA-256: b04d501c321a16b0d2f969a1a2017ce555527a35a1f13a333dcc042bd68097b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded links that point to known malicious redirector infrastructure. The document body and heuristics indicate a lure related to 'game hacks' and 'free generators', suggesting an attempt to trick users into visiting these malicious sites. The primary goal appears to be redirecting users to potentially harmful content or further malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-hack-2021-youtube-game-hack In PDF document text
    • http://kermas.eu/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-redeemable-robux-codes_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-robux-easy-2021-july_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-to-search-for-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-daily-free-spins-link-today_GM406889139.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
stream_004_off0000524f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x524F 27016 bytes
SHA-256: afab02bdda12beccc55cacad020a702bb3c94aa462d896455bb473b96bbebc15
font_01_sfnt_off00008ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC2 18992 bytes
SHA-256: 392bc489a777ad51756cf9e3320d28723cc1102289fe7767f10a05fdf5cd8208

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