Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e59260d110cbe3b…

MALICIOUS

PDF

32.9 KB Created: 2021-07-06 20:22:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7da98a018a800c881e5cd32719d53ad0 SHA-1: 0c8bd6d7ec4fcfde618abef18e11e2ca5bb29efd SHA-256: 5e59260d110cbe3bb6982bcca1d906d55b39e909752ff0133f0475349486a7c9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector pointing to 'http://netcdn.tw/app/431946152/roblox-cp-game-hack'. This lure is designed to trick users into believing they are accessing game hacks or generators, a common social engineering tactic. The presence of numerous similar URLs suggests a campaign distributing links to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.tw/app/431946152/roblox-cp-game-hack In PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-cheat-engine-shut-down-server_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-cheat-engine-scripts-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-jailbreak-hacks-2021-may_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-ranked-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/larva-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/robux-hack-me-com_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-sit-fly-hack_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-drive-money-hack_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/will-roblox-ban-me-for-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-spin-hack-link_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_off00002c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C36 21816 bytes
SHA-256: ba96c56309f55897cffa5b6891dd3c08d01c27925fa7a69fc4883936cdbf535f
font_01_sfnt_off00005c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3B 18664 bytes
SHA-256: ad2375de5567111ace9dcdeb581e255bee5025da315655895a663d8322e40803

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