Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d145a2f5ce45d44…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 18:50:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 067ec26f57c8ff2680f19871ff5b6a99 SHA-1: abd772c2909d123baeb7c3de070da9985d0d5cbb SHA-256: 6d145a2f5ce45d44e98dc8d43ddd1b5ad581fdd0581a7d0216be9deece89b134
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.tw/app/406889139/haktuts-coin-master-today-game-hack PDF link annotation
    • http://apotema.com.co/ufiles/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/free-robux-no-info-needed_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/roblox-rules_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/roblox-free-no-download-unblocked_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/roblox-koul-admin-cheats_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/comment-crer-son-propre-hack-roblox_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/free-green-bird-roblox_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-free-white-shirts-on-roblox-2021_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_002_off00003040.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3040 22616 bytes
SHA-256: 2feeea9eab9878d03b4ad5349163e94511dbf915d0013ff37c8022360e029609
font_01_sfnt_off000062d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D5 18500 bytes
SHA-256: de4287b4d7c6ca7204c59268274f8693e9d2fc3133188a60d6bd2877f4507d7b

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