Malicious PDF — malware analysis report

Static analysis result for SHA-256 336e479ae122f915…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 11:00:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 710616ea374bd6a4dda788bf7b2d68c1 SHA-1: 8cbed51e81cd7eff054315867e754800e39c4e26 SHA-256: 336e479ae122f91585c8c4bf3c2c2c04512b6215263e025324db8f6396566f0f
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The document body and heuristics indicate it functions as a link farm, directing users to numerous scam-related URLs, including one hosted on netcdn.tw. While no scripts were directly extracted, the PDF structure and embedded links suggest a malicious intent to redirect users to potentially harmful content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/can-you-get-free-robux-on-roblox-game-hack PDF link annotation
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/test-all-free-roblox-gear-free-admin-hacking-scripts_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-1m-robux-free-everyday_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-animation-roblox-studio_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-hacks-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-hack-2021_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3101 22176 bytes
SHA-256: 577e9e470ee8c55035e7ed71e783509b65cb71965f2c126cbfea66dd5c228648
font_01_sfnt_off0000625c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625C 19056 bytes
SHA-256: 212cafc25ec0536741ac5c1aa90543f36b34a777adc44243741e4ba36ab4d37b

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