Malicious PDF — malware analysis report

Static analysis result for SHA-256 33434b810f497eeb…

MALICIOUS

PDF

35.8 KB Created: 2021-05-23 15:42:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b78702a8e670c74275254ccad2037b41 SHA-1: 4916ab4f6e45d87d1c40fcae720c0b6f823bee9c SHA-256: 33434b810f497eeb389ded1adf9ae824fc8d3a9062b5b8930d0b2febde9c595b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links and a call-to-action button, directing users to websites offering 'free generators' or 'game hacks'. These links lead to suspicious domains, indicating a lure to download potentially malicious content or engage in phishing. The ML classifier also flagged the document as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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/835599320/free-tiktok-followers-app-game-hack PDF link annotation
    • https://smszepce.info/images/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://smszepce.info/images/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://smszepce.info/images/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • https://smszepce.info/images/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://smszepce.info/images/blogspot-free-spins-coin-master_GM406889139.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_off00002ff8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FF8 26936 bytes
SHA-256: 8ef7b39c9699476f52521d579c59a6c3daa74e2101fb4c94611b5a1482cf8882
font_01_sfnt_off00006be6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE6 17872 bytes
SHA-256: 34129f1c56e014fb2604607ed740d581eed4f4cd55f156cb19b3173e06165e4c

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