Malicious PDF — malware analysis report

Static analysis result for SHA-256 1493f88452d12e21…

MALICIOUS

PDF

33.1 KB Created: 2021-07-20 10:43:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c9c8da51e4a394c960eb465d8eb42828 SHA-1: 24b57c04b40bf6f101b70c2f62f27307227b2382 SHA-256: 1493f88452d12e2177ced997f31f24522d6799fcd930b169734ff94b43d02e88
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 0.9900

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/479516143/minecraft-pe-free-ios-game-hack PDF link annotation
    • https://bi-bordtennis.dk/images/robux-free-co_GM431946152.pdfIn PDF document text
    • https://bi-bordtennis.dk/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://bi-bordtennis.dk/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://bi-bordtennis.dk/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • https://bi-bordtennis.dk/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://bi-bordtennis.dk/images/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://bi-bordtennis.dk/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://bi-bordtennis.dk/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://bi-bordtennis.dk/images/free-robux-com_GM431946152.pdfIn PDF document text
    • https://bi-bordtennis.dk/images/can-you-get-minecraft-for-free_GM479516143.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
font_00_sfnt_off00002fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEA 22040 bytes
SHA-256: 61d46e96966858e6471fd9d3f63ea9b8c8981b24acb30776b968fc5c6c6dc24a
font_01_sfnt_off000060a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A7 17864 bytes
SHA-256: 9df2ada10360c1ec44bdaa5c5cca5c0d6bee254865ff2f5281c544f8bee3309a

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