Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be84129416f75b2…

MALICIOUS

PDF

35.5 KB Created: 2021-06-29 23:58:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6f3a74d9c7997de04da88bc0d16c1394 SHA-1: 6c1720ef970006495ccbb70bacfa04c4a6a22913 SHA-256: 5be84129416f75b2a17f1f135f634a3340d6fb7c5a42aa659db56ae0c415710c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency and hacks to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/how-to-get-free-robux-20217-game-hack, is identified as a malicious redirector. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack aimed at compromising users.

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-20217-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/phantoms-forces-roblox-hack-weapon_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/2021-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/cheat-roblox-jailbreak-android_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/more-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-dead-winter-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-it-isint-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/counter-blox-roblox-offensive-wall-hack-download_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-codes-2021-multiple-people-can-use_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-hack-999999-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-shaggy-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/jailbreak-cheats-roblox-money_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-can-you-hack-get-coins-in-roblox-knife-capsules_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-script-hack-download_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-toolbox-hack-download_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-games-202120213-free-robux-roblox-game_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3274 22656 bytes
SHA-256: 22eeea22c4cbc5bc5e6dada2f1204d8317850a103c9af62fe28ec3a3a2ab874c
font_01_sfnt_off00006462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6462 19444 bytes
SHA-256: 208a6a853e0fc043d9daed487e60e2b9ef693660f9258cffe8f1493f207c7c22

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