Malicious PDF — malware analysis report

Static analysis result for SHA-256 7813b1617daa132b…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 05:07:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c8541294d687f66b74ff9c93cf557f62 SHA-1: 0765b213e449a655b2d3baca19a37ca9fa02f1ef SHA-256: 7813b1617daa132b600ce0fd0109a5a3928079d7f6272df2792e29b1612bdd70
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9864

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.online/app/431946152/how-to-get-free-robux-on-roblox-2021-game-hack PDF link annotation
    • http://zagi.hr/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • https://www.zagi.hr/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-come_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ee0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EE0 28788 bytes
SHA-256: 107cda590dd47b176a2bc69c15aad5915a36ad87a51624fef27a107980b48f0e
font_01_sfnt_off00008faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAA 18756 bytes
SHA-256: 57ee29ca2df633c9559bea9da81b447a7ef2e0dffb4d388bdd233aaad46b31ec

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