Malicious PDF — malware analysis report

Static analysis result for SHA-256 791455692f54396a…

MALICIOUS

PDF

47.0 KB Created: 2021-06-07 15:15:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f312eb0396128d2dcd3c417b5222b6f6 SHA-1: e5eccd078cabb927f28d88d9c5624518f824555a SHA-256: 791455692f54396af79cf7de18e88f23b553a8a70874a8c169cb39b50c18d275
142 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one to a 'game hack' lure, suggesting a phishing or scam attempt. The ML classifier strongly indicated maliciousness, and the presence of multiple external links points to a link farm or redirection strategy. The document's primary purpose appears to be directing users to potentially malicious websites under the guise of providing game cheats or currency.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://netcdn.tw/app/431946152/how-to-hack-atm-roblox-game-hack PDF link annotation
    • https://lib.insan-unggul.ac.id/repository/can-users-on-roblox-make-free-hats_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-weapon-cheat-codes_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FBA 25020 bytes
SHA-256: e3cba819d2e5be36b6b4c2a3ac69a2c37398005835ce39320d585f218193ab2f
font_01_sfnt_off000089a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A7 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00009356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9356 18708 bytes
SHA-256: 0b1934d284cdf6c74363a32f50a7e005b81e106d5b9199e3415fb4a8e452ed6f

Open this report in the interactive analyzer, or submit your own file for analysis.