Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3566ad4bb20628…

MALICIOUS

PDF

44.2 KB Created: 2021-05-19 22:31:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 48825c66500f45db129f4b4af9da7a9e SHA-1: 08f89e24e353f34a577a0439870278dc1b81cea2 SHA-256: 2b3566ad4bb2062812e072d2d27a0edfd22cac33815ffb45335808f767348ba6
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 https://netcdn.xyz/app/431946152/free-roblox-accounts-2021-with-robux-game-hack PDF link annotation
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/wurst-commands_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/roblox-tracker_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_003_off00004b02.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B02 27788 bytes
SHA-256: 3d8c2d39deab70706f3c7959437dfab9051be607fe7bc5cc5145810f702df588
font_01_sfnt_off00008834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8834 19076 bytes
SHA-256: a3899638bf51e335cbc40673d1471e0832e9a39f88469ef4ed0809ba61e6f618

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