Malicious PDF — malware analysis report

Static analysis result for SHA-256 72cbd9c0be9dea85…

MALICIOUS

PDF

33.3 KB Created: 2021-07-06 08:26:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f5862113fda79394ca7bb7672b41444f SHA-1: 87ff6c5d851d276667b69bf410bd27c611e01a9e SHA-256: 72cbd9c0be9dea85587e263e19d8ea9a5496043cd58d4460635865df19d1222a
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/479516143/mcpe-client-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7//repository/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-2021-april_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-make-a-cool-roblox-character-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coolkid-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/fnaf-roblox-the-pizzeria-remastered-hack-script_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-free-tshirt-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/best-roblox-hack-ever_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/cheat-codes-for-free-stuff-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/paypal-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-hack-page_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-make-shirts-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-exploit-cheat-engine_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/junio-2021-hack-robux-en-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/wurst-18_GM479516143.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_off00002f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F89 22224 bytes
SHA-256: e9f0989e1eb60f53e98dfb4cc5633d61da1fbd547cc01494d0d1b9501914087a
font_01_sfnt_off0000603d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603D 18108 bytes
SHA-256: c8b0b382a945d42a24ee610046caad250b3fa0bd75413a760b577ee3708e89f2

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