Malicious PDF — malware analysis report

Static analysis result for SHA-256 594a7c04767c7f95…

MALICIOUS

PDF

35.8 KB Created: 2021-06-22 08:31:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4bf6056d79c5e68387bd2b24c9eac023 SHA-1: be7ce21bee8ed423e094a8ee7b026d6541aa0f3a SHA-256: 594a7c04767c7f95495818a98df09d791c9b3d2b249cdceef0dbf96fa8612012
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, disguised as 'game hacks' or 'free items' for popular games like Roblox and Coin Master. These links likely serve as a lure to download further malicious content or phish for user credentials. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-clothes-on-roblox-without-bc-2021-game-hack In PDF document text
    • http://aeridefense.com/image/data/files/hack-a-game_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-2021-app_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/good-scripts-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/facebook-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/get-minecraft-windows-10-free_GM479516143.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_off000033cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33CD 22052 bytes
SHA-256: 7c2b9677f82dcb347cde93959e74dcfee08f1463c8846be7c22632002ec7adb5
font_01_sfnt_off0000644e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644E 19944 bytes
SHA-256: c6556f58a560392c741c444583a1e190030c9a894508349c4aaf0b74698798f6