Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b02af6d16aee23…

MALICIOUS

PDF

33.4 KB Created: 2021-07-05 21:44:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 21a50b1c12bd6b4e010ddb8d193dd812 SHA-1: b762b8636060708ba40c0738ceea9d3bc8fc422f SHA-256: 32b02af6d16aee23ba5995464b08b004cf9df92804869a2d6797b9d24376e904
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The ML classifier strongly indicated maliciousness, and the presence of multiple links to similar lure-based content reinforces this assessment.

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.tw/app/479516143/minecraft-free-download-windows-game-hack In PDF document text
    • http://digilib-pps.unja.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-hack-for-xbox-one_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/download-roblox-on-pc-for-free_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-stuff-to-get-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-2021-august_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/websites-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/get-free-robux-on-a-server-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/script-fly-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/best-pklayed-games-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/hack-roblox-robux-and-tix_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-do-you-get-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-dragon-ball-rage-cheats_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-cheat-nocliping_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_off00002e56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E56 21912 bytes
SHA-256: 44495e2427a14c911dbf432dd8abae91ea7a4a249cc6905ea63afba4bc05a5fb
font_01_sfnt_off00005e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E36 18776 bytes
SHA-256: 1816d41857fafb62710145750044d0772271d156c0c542d24f261faa84011891

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