Malicious PDF — malware analysis report

Static analysis result for SHA-256 484489d43e8d861b…

MALICIOUS

PDF

37.2 KB Created: 2021-05-26 01:03:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 06fc8e66e07d565b675bbff601700374 SHA-1: db2b000361b39334ce5d658a077502d4b0d1df9c SHA-256: 484489d43e8d861b68d09a8c0a94305584614a3f41a7d99e1d684a0c45dee601
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 0.9447

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/rich-roblox-accounts-free-game-hack PDF link annotation
    • https://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/tiktok-views-free_GM835599320.pdfIn PDF document text
    • https://www.elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-2021_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
stream_002_off0000346a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x346A 25468 bytes
SHA-256: 484621f6fabb4746f8e00bf33031032f1500a823c6aa21f04dd216533ea1a31e
font_01_sfnt_off00006fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE0 18476 bytes
SHA-256: 279d5bd06edc04ef4662a097c633abb5eed6a46f5ccf8ae092ea55c9cfe7972c

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