Malicious PDF — malware analysis report

Static analysis result for SHA-256 397fc8c9938fa4cf…

MALICIOUS

PDF

33.6 KB Created: 2021-06-25 15:38:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 060ecd13eb914392f92b8d093204f22f SHA-1: 8331056d7c52c7a11c0a5ab96429eca89d7c3b2b SHA-256: 397fc8c9938fa4cf7a8954488550b4c5cac8853c355abdc73ba868d4b4a62abc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text lures related to 'free Robux' and game hacks, directing users to a known malicious redirector. The document body and heuristics indicate a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/how-to-get-free-robux-no-human-verification-no-offers-game-hack In PDF document text
    • http://xenonsvjetla.com/files/roblox-com-robux-cheat_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/microsoft-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-games_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/trial-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/10-euro-roblox-karte-free_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-wearedevs_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/pokemon-go-free-quiz_GM1094591345.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/pastebin-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-long-is-the-minecraft-free-trial_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_off00002ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE4 21820 bytes
SHA-256: e9693b82cf149f891581d4f0ca170cfb5ed24857889c0ff2fc0ad6180a656e17
font_01_sfnt_off00005cc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC4 19496 bytes
SHA-256: 5f47ec2a401fd832c34135495631c9bf049ef4f7039d8afabdd73ea79e753b27

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