Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7008d0b50fb7f7c…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 07:01:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 4243f45d2ef31dd46e506dc5746801e6 SHA-1: 69d6a3461aeba7421e811abb86532850607c76d8 SHA-256: f7008d0b50fb7f7c0047201f3988aad52d7746eb2cb5dbf1c027156181bc7219
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/get-free-robux-from-roblox-game-hack. The document body and heuristics indicate a lure for free Robux or game hacks, a common social engineering tactic. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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.co/app/431946152/get-free-robux-from-roblox-game-hack In PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/adopt-me-roblox-hack-gui-trolling_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/como-conseguir-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/hacks-for-the-legendary-sword-rpg-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-leaked-games-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/does-cheat-engine-work-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-robux-promo-codes-august-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/hack-exploit-para-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/best-roblox-shirt-maker-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/picture-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-use-cheat-engine-for-executing-scripts-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-gba-hack_GM431946152.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_off00002f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F90 22584 bytes
SHA-256: ad8350e63d0483490996b49ec28067750f49acc035747d7b017965c3ffd31998
font_01_sfnt_off000061ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EE 19152 bytes
SHA-256: 4a1b984803bb2d6866aa2b9fb6e9878e5fd827f993abd75cca169cec473b5a17

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