Malicious PDF — malware analysis report

Static analysis result for SHA-256 8371f98730d8bb10…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 11:56:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 377b9b8786c00e6b853181553a90f45e SHA-1: 8dc9780c1d764a72d759ff60a622e0f108c4b803 SHA-256: 8371f98730d8bb10c722caf5909165cfb6ecb147c771e60412af2fb9c4ebfb13
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically advertising game hacks and generators. The document body and heuristics indicate a lure for users seeking cheats for popular games like Roblox, Coin Master, and Minecraft. The primary malicious activity observed is the redirection to potentially harmful sites, likely serving as a gateway for further malware delivery or phishing.

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/hacking-roblox-accounts-cheat-engine-game-hack In PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-robux-easy-youtube_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-hackrar-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/pokemon-go-free-602_GM1094591345.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-granny-money-cheat_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-do-money-hack-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/hack-the-robux-2021-pastebin_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-free-wings-hack_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/upgrade-to-roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-script-executor-free-2021_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_off00003208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3208 22332 bytes
SHA-256: 85497203b1ad8c617aff3a01b6b8e352d461a0ef48fd12e441d3edb572734bfa
font_01_sfnt_off000063b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B2 19188 bytes
SHA-256: 41a225e9a11e993eed50576ada2d0f5c4979482e9732701200d9fa87e0a3dd17

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