Malicious PDF — malware analysis report

Static analysis result for SHA-256 7254baaafd3427fe…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 08:07:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6bdf8e8c1769dec7ea5d345641ee4cfc SHA-1: 4fe75ca0f3956413d5be885ba149f0100d97d1b2 SHA-256: 7254baaafd3427feec630bf5ccd697e5152425afd224a440c1742bb8599c09a1
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including a primary lure to 'how-to-get-free-things-on-roblox-catalog-game-hack' and a larger set of links to other game-related hack and generator PDFs. This indicates a likely phishing or scam campaign aiming to redirect users to malicious websites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-to-get-free-things-on-roblox-catalog-game-hack PDF link annotation
    • https://de-licht.com/image/data/files/free-robux-promo-codes-august-2021_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-robux-no-survey-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/roblox-legends-of-speed-hack-pain-exist_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/street-fighting-simulator-infinity-stat-hack-roblox_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/real-robux-hack-no-survey-2021-february_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/roblox-noclip-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-minecraft-account-reddit_GM479516143.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_off00002e68.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E68 22280 bytes
SHA-256: ebb0ca0ca74394ee8ae1de3e71093b61f30191942ba8fdd3c82412c6db64007f
font_01_sfnt_off00005fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEA 19204 bytes
SHA-256: eeb289a1bcf459b2568837be4d1956f8d70812b15178966607a56ea4047ca04a

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