Malicious PDF — malware analysis report

Static analysis result for SHA-256 e192b13ec7fe093f…

MALICIOUS

PDF

34.3 KB Created: 2021-07-19 08:02:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f3b1c2cce02098834cc619adc804a332 SHA-1: 2832b5c22295b2b8df883b9745a61a61759fd246 SHA-256: e192b13ec7fe093f2c0b6f9f841b38bc60c5413dc0fff610c6072017fd55f309
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with promises of free Robux or game hacks. The document body explicitly contains the URL http://netcdn.tw/app/431946152/free-robux-no-verification-2021-game-hack, which is flagged as malicious. The presence of embedded URLs and the lure suggest an attempt to redirect the user to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/free-robux-no-verification-2021-game-hack In PDF document text
    • http://professionalpilottraining.com.au/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/minecraft-java-free-download_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_off00002e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E44 22788 bytes
SHA-256: 950e9534ff2c4784172fe30c6e8aac6465acc2ecb390c8a39384197893b95e92
font_01_sfnt_off00006179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6179 19188 bytes
SHA-256: 1d678ccb09ca7ab390fe1cb16a54ee3a19d850daf1d3792b9105ae8049b7bbf5

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