Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a56c9accddc0da9…

MALICIOUS

PDF

48.1 KB Created: 2021-06-03 13:25:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ccf5e3dd924480120a78370423cda739 SHA-1: fa2a29280c4ad65bdc5e63e2d3f18c2b440d98d5 SHA-256: 3a56c9accddc0da9a872f3ba1931dcd63e47a37d7d4c46c26d7b6807c17404b6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link disguised as a lure for free game items, specifically mentioning 'Roblox Accounts 2021 With Robux' and 'game hack'. This link redirects to a malicious URL. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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 https://netcdn.online/app/431946152/free-roblox-accounts-2021-with-robux-game-hack PDF link annotation
    • http://www.otomasi.uinjambi.ac.id/repository/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/robux-redeem_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/roblox-cp_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-hack-app-2021_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
stream_004_off0000551c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x551C 29244 bytes
SHA-256: 4536030621913f9fc3c9cdde78a8e741de9c223827800001a07d44f234388e87
font_01_sfnt_off00009724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9724 19076 bytes
SHA-256: a3899638bf51e335cbc40673d1471e0832e9a39f88469ef4ed0809ba61e6f618

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