Malicious PDF — malware analysis report

Static analysis result for SHA-256 2834f24f429c45a1…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 07:04:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5efef76589bee14aa3915185463827a3 SHA-1: d109c733e9bb4f528248ffdffb86da0cab75e763 SHA-256: 2834f24f429c45a1c8c1928f8b9c7211b4e1a3a9f0f759e086e252e7c38175a7
142 Risk Score

Malware Insights

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

This PDF document acts as a lure, directing users to download game hacks and cheats. It contains a large number of links to other PDF files, many of which are hosted on external domains, suggesting a link farm or redirection scheme. The primary URL http://netcdn.co/app/431946152/roblox-cheat-engine-duplicate-assassin-game-hack is likely a landing page for malicious content.

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/roblox-cheat-engine-duplicate-assassin-game-hack PDF link annotation
    • https://imagetravelnepal.com/userfiles/files/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-30-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/xonnek-hack-de-roblox_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-hack-for-robuxs-on-robloxs_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/collect-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-hack-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/penguins-on-roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-group_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-spins-for-coin-master-hack_GM406889139.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_off00003101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3101 22588 bytes
SHA-256: 4ba995fd908eea4335b0d8ca0aaceb6774fcac0afb59e9e83de12d2eb7a38d0b
font_01_sfnt_off00006361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6361 19360 bytes
SHA-256: a21af46358fb3640c2bff3d9d74cc580825544885b76c081732219575cb08d0d

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