Malicious PDF — malware analysis report

Static analysis result for SHA-256 5298448c28f09670…

MALICIOUS

PDF

33.4 KB Created: 2021-06-30 11:09:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0865b7c2e233e0f900328072cfab8eb9 SHA-1: 885ac1fdb4781179af3cb4b81cfb7336bfb03228 SHA-256: 5298448c28f096700fa2b52c84f04d12a3443b8176bb62fc09a0fe95b8b86d62
142 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/free-full-colour-brown-pant-roblox-game-hack PDF link annotation
    • http://www.sscs-uae.com/userfiles/files/change-roblox-game-account-website-free_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/como-tener-robux-gratis-facil-y-rapido-sin-hack_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/free-robux-reedeem-codes_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/aimbow-hack-fr-roblox-strucid_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/are-any-boys-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/how-to-glitch-to-a-free-event-item-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/free-roblox-rich-accounts_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/god-roblox-hack-script-fe_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/promo-codes-for-free-stuff-2021-roblox_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/hacked-roblox-face_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/money-hack-roblox-pastebin-leaderboard_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/roblox-robux-generator-hack-no-survey_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/easy-hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/cheat-codes-for-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/google-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/hack-john-doe-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/how-to-hack-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/free-robux-pin-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/btools-hack-for-roblox_GM431946152.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
font_00_sfnt_off00002d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D7E 21576 bytes
SHA-256: 44c3d45fb4b78e9af902f805f84c2dc363b3806ac28e18a222ead2929b3c9e4d
font_01_sfnt_off00005cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC2 19212 bytes
SHA-256: 8835f70db07cb38173e34e8d47a212226fd39da2eaaf62c5c0126d9b10680229

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