Malicious PDF — malware analysis report

Static analysis result for SHA-256 336dabc809ef0321…

MALICIOUS

PDF

33.0 KB Created: 2021-07-06 17:30:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 339b76c1b21e9c33b56ff9220f97a990 SHA-1: 9398e8db886192cb199b15560513b667f273abbc SHA-256: 336dabc809ef0321569baf916391f75974dae22f88245faf9528e7aede8cacac
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'Minecraft Hack 2021' to entice users into clicking embedded links. The primary link redirects to malicious infrastructure, which in turn hosts numerous other links pointing to various game-related exploits and cheats. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for JavaScript execution or further redirection to malicious sites, aligning with common phishing and malware distribution tactics.

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-hack-2021-game-hack In PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/upgrade-to-roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/unlimited-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/bloxburg-fun-free-robux_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/apk-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/alpha-hack-roblox_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-anti-cheats_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-roblox-dlls-hack_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-that-really-works_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_off00002e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E94 21612 bytes
SHA-256: 6fc696fd39a51465fe512f0e4b32d067fc3d6038c3a117cae4bfc018baa1cbe5
font_01_sfnt_off00005de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE2 18428 bytes
SHA-256: 65ef7673dda910d5c1206c2dd7dddcbba7cd96e5a7782ef6ed0e94e119ec4adc