Malicious PDF — malware analysis report

Static analysis result for SHA-256 720efa3f96f4e514…

MALICIOUS

PDF

34.9 KB Created: 2021-06-18 15:15:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 8eb0ac2bba716d09b1a8dc2f5f0dff4c SHA-1: 34c9c752834fa80d89bf255a83271c7abcdf8866 SHA-256: 720efa3f96f4e5143964362d557a99a5abe995cd0638b90eb350bdc2d128fbd1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free Robux and game hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt.

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/gamekit-roblox-free-800-robux-game-hack In PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/robux-builders-club-hack_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/how-to-hack-into-roblox-accounts-using-a-cookie-editor_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/roblox-btool-hack-ultmate_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/free-robux-no-verification-on-ios_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/roblox-magnet-sim-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/how-to-get-free-ranks-in-a-roblox-group_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/roblox-nerf-fps-2021-hack_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/roblox-hack-stella-working_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/how-does-hacking-in-roblox-work_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/how-to-use-slayer-leecher-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/btools-free-download-roblox_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/hacked-roblox-3d-shirt-2021_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/roblox-powering-imagination-redeem-your-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/free-robux-100-works-fast_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/free-money-codes-roblox_GM431946152.pdfIn PDF document text
    • http://www.ttithimphu.bt/wp-content/uploads/fsqm-files/cheat-roblox-roghoul-en-francais_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_off00003050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3050 22320 bytes
SHA-256: b8845c72bbd3a3951cd3a927e38421b81da6cb2f60191fcb9877f0cfb3ae0ba8
font_01_sfnt_off0000619f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619F 19640 bytes
SHA-256: ad69366e11ef646598793c4ba5f72bf81acfe4b3a968e168ea5719dc228f0235

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