Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a81195fb3437e55…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 02:50:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1eb1244d4512818b17df32a54db237a8 SHA-1: 5d988ce9fdacd63cd411ff839d8b011a41a1cb07 SHA-256: 9a81195fb3437e554c0d607a09597f236e6080553aee93312dad7ad3ad64023e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that are disguised as game hacks and generators, such as 'coin-master-free-cards-link-game-hack'. These links redirect to external websites, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious intent.

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/406889139/coin-master-free-cards-link-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-online-hack-generator_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/10-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hack-booga-booga-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-stuff-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/robux-generator-hack-2021-no-survey-november_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/earn-robux-today_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_off000032bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32BB 22968 bytes
SHA-256: 8991c3a52a1e3b22b304a9c4ddab40b6b7207b945772d64fdb963f71ee5242c0
font_01_sfnt_off00006676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6676 18340 bytes
SHA-256: b8fa6a9dfd7b898beef7efa7d7509ded23f04ca787285e81f7d871fc825f65d4

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