Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba9bb587affe3c1b…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 14:04:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 841d3f217644a70e34b03daa62bf669f SHA-1: fce333330b3f78a2f1a7f8b6362f24a04eb50e1f SHA-256: ba9bb587affe3c1b0e2432a9a4049a452557003dc7d8a4676a9755549be7054b
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/406889139/coin-master-free-spins-for-today-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-free-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-creepypasta-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-asssassin-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/can-you-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-adder_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-animations-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-black-pants-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/cheat-engine-for-mac-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/https-webrobloxcom-catalog-202163-hair-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/oprewards-hack-robux_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
font_00_sfnt_off0000336e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336E 22104 bytes
SHA-256: 4afa0e979e1b856f6724d360cfd61e765b5348132edf77c24303c4bbc89d0007
font_01_sfnt_off00006468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6468 18528 bytes
SHA-256: 611292c7b78d9aef83f236a5f61e8588922333099173db31565d3b831f2ee55a

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