Malicious PDF — malware analysis report

Static analysis result for SHA-256 68507b3ed29782e7…

MALICIOUS

PDF

32.6 KB Created: 2021-07-05 16:52:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f81258c24aa707f273060f6e5f1bf6b0 SHA-1: d3425a6511fb17deff57ab23538957f2fa442d3a SHA-256: 68507b3ed29782e754b926f878f8dc286cde600ca96a8b6decc701d979d54600
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9980

Heuristics 4

  • 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.
  • 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 http://netcdn.tw/app/479516143/free-minecraft-mods-for-ps4-game-hack PDF link annotation
    • http://smpn1sda.sch.id/slims/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-generator-no-human-verification-ios_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-cheats-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/forstakenfree-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/jojo-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-hack-free-updated-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-with-out-rewards_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-roblox-premium_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_off00002d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D18 21584 bytes
SHA-256: 3934f0eeb1a4e4949d4861e69f28ad7dcabcce2f4d5c61e1c1b847055f1c70fc
font_01_sfnt_off00005c39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C39 18388 bytes
SHA-256: 94f5e3b5f19579b0f617ee19a3ad83c9cf7751af95d9a845380af6d54d45161e

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