Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b0d7536b33b990…

MALICIOUS

PDF

44.8 KB Created: 2021-06-08 16:35:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 2236fadab3222481140ea8118a2d284d SHA-1: 4abfb5a2150cf767040cb5c9712e6189c652ead4 SHA-256: 10b0d7536b33b99031d1aafab14fb23d6a06726c107fd9c13fc6e9312caff24c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are identified as malicious redirectors, specifically luring users with promises of game hacks and generators. The document body, though partially corrupted, contains references to these lures and embedded URLs. The presence of these malicious links strongly suggests an intent to redirect users to potentially harmful content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/how-to-get-a-roblox-mad-city-money-hack-game-hack In PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-source_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-images_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-tiktok-views-trial_GM835599320.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-facebook_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
font_00_sfnt_off00005251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5251 24304 bytes
SHA-256: d7de7a0cf70ebe64da2fc778a7382f7ced9fa65f7b7e81c5b6e98f7f05bb82b4
font_01_sfnt_off000089e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E1 19120 bytes
SHA-256: 19850857c17daf6e6147b307701bfce4192a3a2aa969d90afcb8807ce9a101a7

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