Malicious PDF — malware analysis report

Static analysis result for SHA-256 628eb85c03605243…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 15:51:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3add81e67b88db50e892af4136478428 SHA-1: 5b7b67e600f4c6da6fed26a54856c3043dfc2460 SHA-256: 628eb85c03605243d1af266c6c086675462de8d7658e78e939e912bb68c2e26b
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/406889139/free-spins-for-coin-master-hack-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/google-how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-in-roblox-comm_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-survey-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pokemon-go-free-evolution_GM1094591345.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-catalog-items-on-roblox-vortex_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-skin-roblox-wiki_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-group-join_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-cards-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/pubg-uc-online-generator_GM1330123889.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-adder_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-robux-420-apk-az_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/do-roblox-admins-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/apps-to-get-free-robux_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_off000030f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F0 22472 bytes
SHA-256: d8cb92456e602d9c320934c24161f9320806f228f4165dad68fcfd5e8d73828f
font_01_sfnt_off00006314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6314 18344 bytes
SHA-256: 1b9c2ef9418efdd4f31bdac1407ea9f2d903a284f26a3d935c42a711d8cabc04

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