Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbdab16ed02a6062…

MALICIOUS

PDF

30.4 KB Created: 2021-07-19 07:27:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: eacbd00feb7bbd8ba23463a33b240c9b SHA-1: 9a35d2147cab5f8d830d323330cbfec6fb94916f SHA-256: fbdab16ed02a6062412a7dbb6b36de6ae3eb247a40b68340df71eb6f84dda3a3
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text promoting a 'Roblox Mobile Hack' and 'free generator', directing users to a known malicious redirector. The document body also contains a link to a Minecraft-related PDF, suggesting a lure for game-related cheats or hacks. The presence of embedded URLs and the nature of the lures indicate an attempt to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0798

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-mobile-hack-game-hack In PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/minecraft-mac-free_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_off00002217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2217 22452 bytes
SHA-256: 3d0d61c96f37ae96e06de7dfd5f045b816b945a381de282a56368b93a3613e3a
font_01_sfnt_off0000542c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x542C 18684 bytes
SHA-256: fefd31dca1b09f4698dad984c4c3d80c913e190f2eb6e931800f01efa94c719c

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