Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d4cf9ad51dd2ff…

MALICIOUS

PDF

32.2 KB Created: 2021-07-06 13:25:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: eecf611fe21a8caad38af72e2f88d9b1 SHA-1: 3af1dd88cccc352c4a840aadc002c6c5f3aab880 SHA-256: d5d4cf9ad51dd2ffd4a10c464f139cd2c88158af8135592c0ee46d8524bd4e7f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure appears to be related to obtaining in-game currency or cheats for popular games. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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.tw/app/479516143/mcpe-client-game-hack In PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-free-robux-no-hacks-or-virsus_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/wwwfreerobuxgenoratercom_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/best-free-avatar-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/robux-prices_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-free-shirts-and-pants-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/village-coin_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/roblox-sword-hacks_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-teleport-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/minecraft-survival-hacks_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_off00002bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF8 21684 bytes
SHA-256: 429ec7a1b3afba044a2ff52a2334670db59e55ccd876b23e0eb50879a09e1e0b
font_01_sfnt_off00005ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA3 18108 bytes
SHA-256: c8b0b382a945d42a24ee610046caad250b3fa0bd75413a760b577ee3708e89f2

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