Malicious PDF — malware analysis report

Static analysis result for SHA-256 a753dbc7c75c6e33…

MALICIOUS

PDF

45.0 KB Created: 2021-06-10 22:35:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 364dabeb8318df2e1f604b0b1b753c29 SHA-1: a8d7def734b79cd8a39b27184701a9d275058d1e SHA-256: a753dbc7c75c6e33b5cfcdc63daaaa23625ad9b1b4eb16229d21cc7e3549ba58
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a lure related to game hacks and generators, specifically mentioning Roblox. It contains multiple embedded URLs pointing to potentially malicious download sites. The heuristic firings indicate a high likelihood of this document being used for malicious redirection and potentially distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/roblox-download-free-windows-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-for-roblox-yolasite-com_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/tiktok-free-iphone_GM835599320.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-2021-hack-banners_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-a-roblox-dominus-for-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coins-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-glitch-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-dragon-adventures-cheat_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/code-hack-roblox_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
stream_004_off00005266.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5266 24732 bytes
SHA-256: 477ac3859720b4ff3ac3c64fc501a64820cd123ecfc6817c298450a4f6b12d21
font_01_sfnt_off00008b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B32 19000 bytes
SHA-256: a53b8c2ac05b0cf6adf17277c117976d9d94b04561d53a05ce753df000b396d4

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