Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e3561f1b569c293…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 14:41:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 35974297686369aacc03b9ad7e692c58 SHA-1: 3af6c8fd8d10a3177a0a8731ce7f340f8248dd85 SHA-256: 0e3561f1b569c29306c511b43819d60635144616ca4d1bdfa8656dc1aab4b30a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it's a malicious redirector lure, specifically targeting users interested in game hacks and generators. The primary URL, http://netcdn.tw/app/406889139/coin-master-spin-link-today-game-hack, is identified as a malicious redirector. The document body, though partially corrupted, reinforces the lure with text related to 'Coin Master Spin Link Today' and includes numerous URLs pointing to similar game-related content, likely designed to obscure the malicious destination.

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/406889139/coin-master-spin-link-today-game-hack In PDF document text
    • http://digilib.uim.ac.id/repository/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-make-an-item-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/best-roblox-hack-guis_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/best-free-roblox-items-exploits_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://www.digilib.uim.ac.id/repository/free-girl-pants-ids-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/hack-roblox-luq_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-roblox-money-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-get-free-robux-2021_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
stream_002_off0000321d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x321D 22784 bytes
SHA-256: 35ca48d1ba3bafc980440852166bc0962e556f9eb50d6603d14d81b801d9ce7b
font_01_sfnt_off000064f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F7 18536 bytes
SHA-256: 232cb4b515db04c7b0e85e36ce0db153ce2fb992ec8f88a884e5f1f80d4c2854

Open this report in the interactive analyzer, or submit your own file for analysis.