Malicious PDF — malware analysis report

Static analysis result for SHA-256 85a6eb1a2786267e…

MALICIOUS

PDF

32.2 KB Created: 2021-07-05 21:53:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3f24ffa8ec52b83483b5889dcdc6f35d SHA-1: b189af29d093475f807da510418015189c1d901c SHA-256: 85a6eb1a2786267e673cbdf2ebd1219178220646a60708105005866d166199a9
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 0.9824

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/earn-robux-online-game-hack PDF link annotation
    • https://elibrary.sttar.ac.id/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-shoulder-pets-free_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-re_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/case-clicker-hack-roblox-2021-no-virus-free-download_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/hack-meme-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-coloring-pages-for-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-hack-tool-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off000029ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29EF 21836 bytes
SHA-256: 54cc2e579713f7b2eaeb362f36381d1a2a12aaa6166d0b58660eb540ad00dc7f
font_01_sfnt_off00005a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1E 18744 bytes
SHA-256: cacdbe3b2c8def67201ad09f0e8737d99eb038cf9c260e0820846d3ceea07437

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