Malicious PDF — malware analysis report

Static analysis result for SHA-256 864ad4687149fae6…

MALICIOUS

PDF

43.5 KB Created: 2021-05-19 22:30:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0243fcc1908170deb075853758ed0f18 SHA-1: e4e9f078256881a4b7b50c3ae075efc9630aeec8 SHA-256: 864ad4687149fae6c831d0242ab61402d09b8872d9bdf9a1b48eb332bfa118bd
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors and lures for game hacks, indicating a phishing or scam attempt. The primary malicious URL identified is https://netcdn.xyz/app/431946152/robux-for-surveys-game-hack, which is likely used to deliver a secondary payload or redirect to a phishing site. The document body, though partially corrupted, contains references to game hacks and survey scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 https://netcdn.xyz/app/431946152/robux-for-surveys-game-hack In PDF document text
    • https://www.xenonsvjetla.com/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/pubg-uc-esp-hack_GM1330123889.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/haktuts-coin-master-free-spin-link_GM406889139.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
stream_003_off00004b2b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B2B 26600 bytes
SHA-256: 897822fc506d7c523f4e12685cdd0be0e20a05c4cca45044be1d35dd09a6de92
font_01_sfnt_off0000878e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x878E 18308 bytes
SHA-256: 7f774dfd0b19443a0143427e3febf5e3e78e6b4c2c23fb5340d2060c1fb2add6

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