Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e34c6455232d15f…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 14:39:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7412a3e41676cdc084f4308e8f229f30 SHA-1: 2d6e9cb3108ab2b148a8399d4613477350c81a56 SHA-256: 2e34c6455232d15facb4dbbfa66bb813db06ee4d1f36283b7387c4604ecef26c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to game hacks and free in-game currency, directing users to a URL that hosts offers. This is a common social engineering tactic to trick users into visiting potentially malicious sites. The ML classifier also flagged this PDF as malicious with high confidence.

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/offers-to-complete-and-get-free-spins-in-coin-master-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-pokemon-go-accounts_GM1094591345.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-hacks-for-chromebook_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-game-tablet-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/best-free-roblox-t-shirt_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
stream_002_off00003146.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3146 23096 bytes
SHA-256: eb7fc432cd42be0e5c66654245ec2ee994116e10886abed319f8aaf9f482e42d
font_01_sfnt_off00006584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6584 18680 bytes
SHA-256: 2a7bb7f23522a1dd313ffdbcd397222ab2779f4df9b926982d15749062ee0bca

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