Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e115b98fc1ab81b…

MALICIOUS

PDF

35.2 KB Created: 2021-07-08 18:05:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 80ed7248888f7b613141722101184d2d SHA-1: 0add65ee3483be33156a2c3dd8619109033b6363 SHA-256: 7e115b98fc1ab81b56f845ccb78f197f857ff443fd89cbe394b18e4fd054445e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating it is a malicious redirector lure, specifically referencing 'game hack' and 'coin master hack' content. The primary URL, http://netcdn.tw/app/406889139/smart-lodhi-coin-master-hack-game-hack, is identified as a malicious redirector. The document body and embedded URLs reinforce the theme of free game resources, aiming to trick users into clicking the malicious link.

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/smart-lodhi-coin-master-hack-game-hack In PDF document text
    • http://library.umuslim.ac.id/repository/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-website_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/thanos-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-stacked-roblox-arsenal-account_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-cursed-islands-hack_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-tutorial-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-auto-clicker-download-tutorial-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-give-items-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-stuff-on-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-ash-greninja-shirt-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/robux-xyz_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hack-pants-roblox_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_off000030f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30F9 23532 bytes
SHA-256: 648e911870e6fba0b85bd644c215ff98f1b64a0140955b5e5c246699bf21d362
font_01_sfnt_off0000661d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661D 18604 bytes
SHA-256: 6bfb851f531803f0264a0def4d3a49ed7a91617bb06251bbc18baf886874b414

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