Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c5263357a45dbd8…

MALICIOUS

PDF

46.2 KB Created: 2021-06-13 23:59:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9c055d1920701bf81e3229d72ce0f7ce SHA-1: 500e3aa21e2d4c6cb5af89d7c9cdc145af6e7a51 SHA-256: 4c5263357a45dbd88fd81b879f4c3309173cf1fc2b45df09e690a1dde3ad8eac
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a game hack, directing users to a malicious URL. The presence of embedded URLs and the 'GAME_HACK_REDIRECT_LURE' heuristic strongly suggest a phishing or scam attempt. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs indicate a likely attempt to redirect users to a site that may host further malicious content or solicit credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/hack-roblox-pc-sur-jailbreak-2021-game-hack PDF link annotation
    • http://internetdeputy.com/images/free-obc-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/pubg-uc-daraz_GM1330123889.pdfIn PDF document text
    • http://internetdeputy.com/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-hack-roblox-points_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/mcpe-client_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-hack-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AEF 25328 bytes
SHA-256: d5c2cf540b39d604c6fdb2dd19f59779feb07d39ca3bb1be7c2a33584e87b734
font_01_sfnt_off000085c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C2 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off00008f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F62 19164 bytes
SHA-256: 1be4f349497bd3cf54b728442bd1e68b33c0bfead738d75fe5f1f71c58e40018

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