Malicious PDF — malware analysis report

Static analysis result for SHA-256 911e32453e16532e…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 11:35:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f7e7ed4947282c5f29a5657f777f617a SHA-1: d956bb999b1116367010c367ce487350ab554a59 SHA-256: 911e32453e16532edc10d530b43057516bc95f8f4352b33338350af133db1ac8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of 'free Robux' or game hacks to entice users to click on embedded links. The primary link, http://netcdn.tw/app/431946152/claimrbx-free-robux-game-hack, likely leads to a malicious site designed for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the PDF structure itself contains numerous links to similar scam-related content.

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/431946152/claimrbx-free-robux-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/roblox-hack-executor-level-7-download_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/robux-in_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-tiktok-fans-app_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/pokemon-go-free-team-change_GM1094591345.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/bloxpink-free-robux_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_off0000339b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x339B 22408 bytes
SHA-256: b09baf23a53e4e1076dd0b5f123d524abc98ffd1b9843d159b0879058fc9fb46
font_01_sfnt_off00006594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6594 19168 bytes
SHA-256: 7bf764ce28968fdb785bb336023e4079e63a9f6de2364164f85b44d41da13fd4

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