Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f56fab1e08d1416…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 05:37:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d53949bd3ae9b47d3098c7bef3acf1bc SHA-1: 6a6e806ff404edfdd3ada4801e8b9fe18435c8a1 SHA-256: 7f56fab1e08d1416791a9e48ea246847a387a9bd8f9a4613d22400a710b7cf53
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free currency, a common lure for malicious downloads or phishing. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs further supports this. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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/great-robux-hack-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/how-to-get-free-robux-in-ipad_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/best-items-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-the-legend-of-the-bone-sword-rpg-hack-script_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/trigon-best-free-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-mobile-cheats_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-virtual-code-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/gete-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/google-only-roblox-items-free-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-free-draw-trolling_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-bedrock-free-download_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
font_00_sfnt_off00002e2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2D 22576 bytes
SHA-256: 9f8efb7c85325a222f2b9cf035e05967e4b4eacf1cbe683ea23a8f2bb6bb7f3d
font_01_sfnt_off000060d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 18824 bytes
SHA-256: 30f83141e1c52ceccea1741298f209216019995c79136c23ad52db5b72ce2132

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