Malicious PDF — malware analysis report

Static analysis result for SHA-256 df82315a664c14c3…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 15:29:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8a870ac3ac86d2c69eccb84fd2ebec8c SHA-1: dc01c745b03fcb9b8a7f6c4ff19cb052e7a7d949 SHA-256: df82315a664c14c342a449e6fee7929e1bce8a8fea832f8db80d69ee36983320
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 0.9980

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 http://netcdn.tw/app/431946152/games-that-give-free-robux-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-hack-tool-download-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-german-uniform-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hack-electric-state-darkrp-beta-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-hack-roblox-using-command-prompt_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/pubg-uc-dark-web_GM1330123889.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/packetofworld-com-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-coins-and-spins_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_off00002f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0F 22168 bytes
SHA-256: 85289834239ea95775c42ca286ddc33fb7d6c7b8cfdb829869ccfa0492110e08
font_01_sfnt_off0000604f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604F 19480 bytes
SHA-256: a134365561edbdff80a1502dd404e307ea3328ecb7bf3d1da0fbfee9abe6ee6f

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