Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c504dbde8101e9…

MALICIOUS

PDF

35.3 KB Created: 2021-06-26 15:23:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 48e628b4508eb7b06d826f82e9d5e2f1 SHA-1: 545957533312fb3f4596a85abbfa07cc35d9567f SHA-256: 24c504dbde8101e9034582b42a5b57068b06879610c89c04da0ce4dbec27571a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to websites that promise free in-game items or hacks for popular games. One of these links, http://netcdn.co/app/431946152/how-do-u-get-free-clothing-on-roblox-game-hack, is identified as a malicious redirector. The document's content and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially malicious sites.

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-do-u-get-free-clothing-on-roblox-game-hack In PDF document text
    • http://opac.salatiga.go.id/slims7//repository/what-is-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/iroblox-club-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-roblox-promo-codes-2021-may_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/actual-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-cheat-in-roblox-eep-city-starball_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/new-hack-for-roblox-deathrun-2021-pc-download_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hack-roblox-robux-free-pastebin-com_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hack-roblox-now_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-codes-october-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-that-i-can-play-for-free_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_off00003184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3184 22552 bytes
SHA-256: c88ab45f6857a7493176483041752fcded0f98ac2f8c042ab1a4431564566d6e
font_01_sfnt_off0000640b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640B 19372 bytes
SHA-256: ee7de9911568e75090fff536fad0819a7b4430d5878b3c1a8f763448b7cee11a

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