Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b1662547cce7f3f…

MALICIOUS

PDF

45.1 KB Created: 2021-05-17 06:02:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 66bb5777a4d784720856f367359121ff SHA-1: 5ae69df2dd1c8af46f79c9e64377367ab5a27aa0 SHA-256: 4b1662547cce7f3ff59e2b3db25a6c32cb7abc0850caa89d4cdaacbde3363ed7
82 Risk Score

Malware Insights

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

This PDF file contains a lure for game hacks and free spins, directing users to external URLs that likely host malicious content. The ML classifier strongly indicated maliciousness, and the presence of numerous game-related lures suggests a phishing or social engineering attempt to trick users into downloading further malware. No scripts were extracted, but the PDF structure and embedded URLs point to a downloader or redirector pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/406889139/coin-master-daily-free-spins-link-game-hack PDF link annotation
    • http://parsbaft.com/images/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-hack-no-human-verification_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
stream_003_off0000491d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x491D 25968 bytes
SHA-256: 9f2a6e6e8994459e298c55801e87db8037d38fafcc81f656235d0a744939a780
font_01_sfnt_off0000834b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834B 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFD 18476 bytes
SHA-256: dd1e9edcae6782c480dff53724a1580fadec54e6656b8ddfb273bcd699f2c343

Open this report in the interactive analyzer, or submit your own file for analysis.