Malicious PDF — malware analysis report

Static analysis result for SHA-256 8107b5a240114f41…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 04:19:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 353dbb3a0091a586464656bbdc05d7f4 SHA-1: 10e058edf48904b677f7af5bdbeec3c9313ba0ee SHA-256: 8107b5a240114f41d0dfe4dc381f628b93f76ba3bb8e7e65825368de0355943a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.xyz/app/479516143/free-minecraft-capes-no-mods-game-hack PDF link annotation
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/village-4-coin-master_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
stream_003_off00004a32.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A32 25720 bytes
SHA-256: 2e242f7c19f6314c74f5b6d5a466145f2941a73be7d633ad63b8246627dbe829
font_01_sfnt_off000084f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F4 18060 bytes
SHA-256: d2580fb4aafe993e5dab330080fdbce20cb4b143aeb227db28560abf8afc6474