Malicious PDF — malware analysis report

Static analysis result for SHA-256 be395c89bb84db7a…

MALICIOUS

PDF

34.3 KB Created: 2021-06-18 23:08:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 61e9c01af40093795af11511bd58ba0d SHA-1: c1e996400ccd8042ce4aced2efff9187adc3533d SHA-256: be395c89bb84db7a949871d383ef07ab5b252a5c7ae36bcd6040ba009c498600
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/como-descargar-hack-para-roblox-2021-game-hack PDF link annotation
    • http://sbm-nn.ru/images/roblox-hack-cheat-free-robux-generator-online-exploit_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-hack-people-item-in-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-without-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-toys-codes-hack_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-hack-2021-how-to-get-free-robux-and-more_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/cringe-guys-trying-to-have-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-hacker-egg-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/pasos-para-hackear-coins-master_GM406889139.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_off00002d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D75 22496 bytes
SHA-256: d1ead19e6d3f4c75208807f58989bb38b704571e8891e6cff63915345685331e
font_01_sfnt_off00005fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAB 19452 bytes
SHA-256: 7abeed9af13b3d17f4f32d8af2de985be2a3b65a397f1537e5cccc100220184b

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