Malicious PDF — malware analysis report

Static analysis result for SHA-256 197829f78dca9509…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 19:22:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 26e48685a090583d3e06410fd2dff551 SHA-1: 0fc1a963fbf259d6cf848699bcefce847da0e39d SHA-256: 197829f78dca9509857f2ae16639b644feaed3968860bd94f6dab67d8549c546
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for game hacks and currency, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of external URIs and game hack lures confirms a social engineering attempt. No scripts were extracted, but the document's primary function is to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/free-roblox-injectors-list-game-hack PDF link annotation
    • http://ff-obertraun.at/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/how-to-hack-phantom-forces-on-roblox_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/pastebin-com-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/how-to-get-free-robux-ferbuary-2021_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/como-hacer-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/roblox-bot-free_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/hack-bloxtube-dinero-infinito-roblox_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/pubg-uc-buy-cheap_GM1330123889.pdfIn PDF document text
    • http://ff-obertraun.at/images/pokemon-go-free-trade-evolve_GM1094591345.pdfIn PDF document text
    • http://ff-obertraun.at/images/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/roblox-avatar-free-girl_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off000031a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A5 22424 bytes
SHA-256: 1f191bc5d6c1b1811538a0d94c08705077401c87145717b4a80ac29d9a1e1dfe
font_01_sfnt_off00006391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6391 19060 bytes
SHA-256: 027437a160bacd75649b1a0082796dc7ff7340b9fbaca1ccca2b5672b721b2f7

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