Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa487d7e29043bab…

MALICIOUS

PDF

40.8 KB Created: 2021-05-23 13:07:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4648b6eeeb460cbf627e1ec89f49877f SHA-1: 2cca4046b27ec7b168df270c43f90e2698e84df3 SHA-256: fa487d7e29043bab5d4bbee4f72e04642dcfcae432637a18bf91789ac6ef5742
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 0.7445

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/roblox-fly-hack-game-hack PDF link annotation
    • http://initiatiev.nl/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/can-i-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://initiatiev.nl/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://initiatiev.nl/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3552 25684 bytes
SHA-256: 74cee71cdc6561db7f5d1f1cd58908cc63bae8b4039e4b7914641d5d8f48caba
font_01_sfnt_off000070b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B3 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00007d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5A 18528 bytes
SHA-256: 48aa5298b09ebe1486756ea90f1095ff6b224374f32c9ff4b9ed1390be9ca915

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