Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6901cdd374835c…

MALICIOUS

PDF

39.9 KB Created: 2021-04-23 23:15:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 178b94a82302bb4215bd3a6c1f693936 SHA-1: 12ac49b29aa23e8219285d4d80b451330a0dbf77 SHA-256: ca6901cdd374835c5a9a6683a53bd407497e78d7a1695d709b561ced8e0b6ca3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netsecure.top/app/431946152/cute-roblox-outfits-for-girls-and-for-free-game-hack PDF link annotation
    • http://jdlrelocation.com/images/roblox-las-vegas-money-hack.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-robux-giveaway-live-stream-now.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-robux-in-a-sec.pdfIn PDF document text
    • http://jdlrelocation.com/images/robux-free-password.pdfIn PDF document text
    • http://jdlrelocation.com/images/roblox-hacks-phantom-forces-2021-regedit.pdfIn PDF document text
    • http://jdlrelocation.com/images/roblox-meep-city-free-items.pdfIn PDF document text
    • http://jdlrelocation.com/images/roblox-project-pokemon-hack-vermillion.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-roblox-like-game.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-robux-on-ipad-and-withoutb-downloading-anything.pdfIn PDF document text
    • http://jdlrelocation.com/images/how-do-you-make-a-roblox-cheat.pdfIn PDF document text
    • https://freerobux.cyouIn 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_off000040a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40A2 25180 bytes
SHA-256: 67b291be333504b495904019f9e44eef3d542c44aa2270b3b0138ef11babc339
font_01_sfnt_off00007960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7960 18484 bytes
SHA-256: a2e5785c1e17669a032feb959d675b386cc64508d0d38c18eaaf34eaffb75317

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