Malicious PDF — malware analysis report

Static analysis result for SHA-256 16fd1beb423afe22…

MALICIOUS

PDF

31.2 KB Created: 2021-05-10 17:56:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d5ba4a43567527404147debc6029bdfd SHA-1: ca696d40be6c6803180ca4af3ae5baf8a7f3f613 SHA-256: 16fd1beb423afe22cde9173d332a8d53b340acb1a936dd09bb6596de097dee45
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to websites offering game hacks and generators, such as 'free roblox website game hack'. The ML classifier strongly indicated maliciousness, and the embedded URLs suggest a phishing or malware distribution attempt. No scripts were extracted, but the document structure and linked URLs point towards a lure for users seeking cheats or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 3

  • 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.
  • 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/free-roblox-website-game-hack PDF link annotation
    • https://au-ma.com/image/data/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/roblox-free-pets_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000494f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494F 26392 bytes
SHA-256: d813bbd27cf678792383fe30eabd533a3ba1b76fabaa42f668c39af595e4ca59