Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b84d7a6416693c6…

MALICIOUS

PDF

35.9 KB Created: 2021-06-18 10:14:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b399788b546b335fadf7c4a0878a1566 SHA-1: 03939e64a16534deacdcf5a2548b8ff38f806913 SHA-256: 9b84d7a6416693c60cff1f0fc5ac31f17c7bcd69b8cbfb639a152303045bc8a5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with promises of free game items and hacks. The primary malicious URL identified is http://netcdn.co/app/431946152/free-halloween-costumes-on-roblox-game-hack, which is associated with a game hack generator. The document body and embedded URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful 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/free-halloween-costumes-on-roblox-game-hack In PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/kick-persons-in-free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-roblox-gift-card-codes-no-survey_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3446 22760 bytes
SHA-256: 3fd35851176dd8f472440679394023f2aec5039c8f64a8a58b13d5d1fa5a2746
font_01_sfnt_off000066b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B3 19320 bytes
SHA-256: eea455ebe43f577079d52d0065e424977978e5c4d68c2949144a87c2cdab6388

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