Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf51855a5d5167b…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 11:55:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d4ed1ccfb2315f2f3f66ff4852b4ca83 SHA-1: 8ff2796db014b889fe3254c6208dc1a251b46593 SHA-256: abf51855a5d5167be3525d379317fe7e4e0beab66d266016e8280553f831c640
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/431946152/free-robux-codes-game-hack PDF link annotation
    • https://lib.insan-unggul.ac.id/repository/upside-correctional-facility-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-hack-roblox-money-2021_GM431946152.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/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-robux-2021-fastest-and-easyest-way_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-free-robux-2021-no-wait_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/video-de-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/btools-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/pokemon-go-free-roam_GM1094591345.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/cheat-ultimate-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/robux-hack-downlaod_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_off00002ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAD 22420 bytes
SHA-256: d7c12556cf767b67655255c18895e044011f21828157d20276b8195917dc73ab
font_01_sfnt_off000060a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A5 18888 bytes
SHA-256: 0b210ae1d2f25d9b8ac974921f9fa88679103a832855b836aa7747c7a59cf8bc

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