Malicious PDF — malware analysis report

Static analysis result for SHA-256 c908a8fd1903d5e2…

MALICIOUS

PDF

34.0 KB Created: 2021-07-24 03:25:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: cff3c63385fd68f9fe22aaea3906a377 SHA-1: 10ecaef86a2294264fb7776d389bcace10953859 SHA-256: c908a8fd1903d5e22276629430e22b7ff64c67e78aed6829b1778e491723fe91
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 0.9955

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/835599320/free-tiktok-likes-game-hack PDF link annotation
    • https://www.hejazaccounting.com.au/wp-content/uploads/fsqm-files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.hejazaccounting.com.au/wp-content/uploads/fsqm-files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://www.hejazaccounting.com.au/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://www.hejazaccounting.com.au/wp-content/uploads/fsqm-files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://www.hejazaccounting.com.au/wp-content/uploads/fsqm-files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://www.hejazaccounting.com.au/wp-content/uploads/fsqm-files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hejazaccounting.com.au/wp-content/uploads/fsqm-files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://www.hejazaccounting.com.au/wp-content/uploads/fsqm-files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.hejazaccounting.com.au/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://www.hejazaccounting.com.au/wp-content/uploads/fsqm-files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003019.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3019 23448 bytes
SHA-256: fd4e0e3456c6eba591091cd423625616017585f71c4468e28a042a862a5ace23
font_01_sfnt_off0000655b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655B 17456 bytes
SHA-256: 90aab8e20699190043af8c1921cf798ffa728f6e874bf4804f87169ad62e4652

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