Malicious PDF — malware analysis report

Static analysis result for SHA-256 a285c2f324b43d9a…

MALICIOUS

PDF

51.2 KB Created: 2021-05-17 17:55:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ddc915c5e4a3648af95fb052c28472a5 SHA-1: 8db045f2782fa9aad78304235a62c19841434cca SHA-256: a285c2f324b43d9a86ed35a62f8b2a82d4ecc092ef6c760711afb31e0f368e13
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 0.9979

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/how-to-get-free-robux-easy-no-download-game-hack PDF link annotation
    • https://shimony.net/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/infinite-robux_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • https://shimony.net/images/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://shimony.net/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/hack-version-of-coin-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
stream_003_off0000499d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499D 40760 bytes
SHA-256: 2a94a90d133696deb0bc4d89d4e2853d97aab4c3acdf568469955c0555fe12c1
font_01_sfnt_off0000a402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA402 19108 bytes
SHA-256: 7bc61c49a0b734df4d56b9cb8c894117daf111bfa68c773dcc76edca8f070452

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