Malicious PDF — malware analysis report

Static analysis result for SHA-256 27b7a79b58b709dd…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 08:07:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9ceb633f3d9aef9c6de351a5bc99f6af SHA-1: b0ecd445a43027441c56f7d97c440807be65b330 SHA-256: 27b7a79b58b709dd328fcae3870ca3c949c75e2feb83ea6e38b5c52a53c647d1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game items and gift cards to entice users. It contains multiple links, including one to a known malicious redirector at http://netcdn.co/app/431946152/free-samples-roblox-gift-cards-game-hack, which likely leads to further malicious content or malware. The document's structure and embedded URLs suggest a phishing or scam campaign.

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/free-samples-roblox-gift-cards-game-hack In PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-no-scams-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-change-your-robux-name-for-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-card-from-roblox-vending-machine-in-prison-life_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-headset-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/robux-hack-top-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-roblox-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/games-to-get-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-robux-no-tix_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-money-cheat-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-40-robux-survey_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-unlimited-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/generate-free-robux-gnome_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/comment-hacke-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-created-by-jess-the-gamer-girl_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-for-kids-easy_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_off000030db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DB 23160 bytes
SHA-256: dc11bebbfb714c119f20b7cda66f1fb986b59e016256889ba30c336b021d7c66
font_01_sfnt_off00006501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6501 19484 bytes
SHA-256: e8434834a6d085765fb23f6ad68288c69945a32073012bbcd08e31d577842af9

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