Malicious PDF — malware analysis report

Static analysis result for SHA-256 555f2b68ee781507…

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 01:20:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a070f47f7600ef82ac47197730d55640 SHA-1: ae9c36ab7feac9e66df1505c38df7be3838d10ad SHA-256: 555f2b68ee7815071a1918a7a2cad825c7ca2bd63cc1eac05536f5774c1941aa
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.co/app/431946152/free-games-like-roblox-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-client-no-survey_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-without-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-ninja-legends-hack-apk_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/como-usar-cheat-engine-no-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-make-tshirt-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-change-a-name-in-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-how-to-get-free-robux-no-hacks-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-account-roblox-generator-download_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-codes-no-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/https-wwwrobloxcom-hacks_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-robux-for-free-2021_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_off000030a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A8 22488 bytes
SHA-256: 0e4a9ab11e4507b886292db3c2325499369776f2bbfab538da25405e193752e4
font_01_sfnt_off000062d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D6 19200 bytes
SHA-256: 5a76770402f9f54129e6e851f2a2ed8d0409cdca6ea1a763283255a31589df9a

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