Malicious PDF — malware analysis report

Static analysis result for SHA-256 db3a5974bf3b4350…

MALICIOUS

PDF

32.8 KB Created: 2021-07-06 03:37:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5531b636b62aa81309e4528e29ed9fe5 SHA-1: d272a5d912b92017f1a981cbdb5851dabbf807cc SHA-256: db3a5974bf3b4350d30b491f576805130635967bc1806c27d8c733f59d0ba1e1
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/479516143/minecraft-java-account-free-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk/repository/eazy-was-how-to-hack-into-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hack-roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-free-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-hack-into-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-map_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/start-earning-free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/gift-card-roblox-free-codes_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-giveaways-top-hack_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/dll-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-free-admin-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-in-app-purchase-hack_GM406889139.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_off00002d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D57 21656 bytes
SHA-256: 1c2e5bc946ea339be5b0baa8b026771044bcfa24104aa76b3a673edb1db3de90
font_01_sfnt_off00005ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE3 18420 bytes
SHA-256: 4a74c40a1b1e29c96944a4022887c367d8badab26ac77df303b82089cac1792a

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