Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1206a4524acd3d4…

MALICIOUS

PDF

32.6 KB Created: 2021-07-05 20:31:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3a5c8ebeb2f11fab50e536ef875d93d7 SHA-1: 9015990098ce34f5e4445181987f6bb9b5a44438 SHA-256: e1206a4524acd3d4d82a30f8e4b6a8501b6452c89976512b6717924804baf734
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including a prominent one to 'netcdn.tw', which is flagged as a game hack redirector. The document body also contains similar lures for game-related cheats and generators. This suggests a social engineering tactic to trick users into visiting potentially malicious sites that may host further malware or phishing content.

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.tw/app/479516143/free-minecraft-skins-ps4-game-hack PDF link annotation
    • http://library.stikessuakainsan.ac.id/repository/game-api-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/pet-paradise-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/tiktok-free-tools_GM835599320.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/get-me-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/i-got-hacked-in-weird-writing-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/i-got-hacked-in-roblox-albertsstuff_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/instant-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-diamonds-for-royale-high-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-robux-that-actually-works_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_off00002dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD2 21668 bytes
SHA-256: 05e3e61215427fd050b94256bf56949e6e1ba4911310843b5a79a99e00c89e91
font_01_sfnt_off00005d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D07 18240 bytes
SHA-256: 6daa34d29039d14d6e8e9b91e5a3faac5892ee57159e218ecefd22ef391d5d0b