Malicious PDF — malware analysis report

Static analysis result for SHA-256 c015efe30cfa893b…

MALICIOUS

PDF

33.2 KB Created: 2021-06-28 02:39:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 849a845929edfb027f4d60fe538e3ea1 SHA-1: 551fbf326f92c3f604d5341cfba4d1dd2284a0a5 SHA-256: c015efe30cfa893bf05b96c7344319fc396162ad41e6e90e12cf69b03cbd812c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and currency to entice users. It contains multiple links to redirector infrastructure, including http://netcdn.co/app/431946152/home-tycoon-2021-hack-roblox-game-hack, which is flagged as malicious. The document body and embedded URLs suggest a phishing or scam attempt, likely leading to malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/home-tycoon-2021-hack-roblox-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-how-to-customize-your-character-for-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-money-on-muder-mystery-2-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-download-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/cheat-engine-roblox-67_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-accounts-that-work-100_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-generator-no-human-verification-and-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-admin-hack-scropt_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/pubg-uc-ucuz_GM1330123889.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-account-generator-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-no-verify-2021_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_off00002a79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A79 22148 bytes
SHA-256: 27687fe180662c97f34a746ed033fb1cde486b9e3269c297d45703b27d907ce2
font_01_sfnt_off00005b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6D 19496 bytes
SHA-256: c84b5545b88f769ee9ca5590395d29e93ba1f8dc54ef65e0c9694b725f5f111f

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