Malicious PDF — malware analysis report

Static analysis result for SHA-256 149f1d8daba4f845…

MALICIOUS

PDF

45.7 KB Created: 2021-06-11 02:21:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 449925983ebb74a3e1da4a55bbe1ab92 SHA-1: 5bdd53475321d41f6d7d5a7f2deefcf258a04406 SHA-256: 149f1d8daba4f845d50c82dd949eaaea943ed9f32691c4c40a4b52a6b48dd709
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs, with a primary link pointing to a "download hack" page. This lure, combined with the ML classifier's high confidence, indicates a malicious intent to redirect users to potentially harmful content. The document body and heuristics confirm the use of game-related lures to entice clicks.

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.tw/app/431946152/download-hack-roblox-2021-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/mc-hacks_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/rewards-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-for-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-item-hack-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-do-you-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-arsenal-hacks_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_004_off00005246.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5246 26988 bytes
SHA-256: d2174f01ecf61db746960664282abd7eb6f88d233cbf180eb17c2e1c1e7948f0
font_01_sfnt_off00008d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5F 19092 bytes
SHA-256: 2da422d8448ebc06c1c6caf2172c340f3f9a4b932f547c47530c2db06ac03de0

Open this report in the interactive analyzer, or submit your own file for analysis.