Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63af55128043f7f…

MALICIOUS

PDF

35.9 KB Created: 2021-07-03 16:32:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ef98206052223efd40f4dbaa324765ef SHA-1: 17b5462de463711835a3f88ac6049f28ef5464c2 SHA-256: a63af55128043f7fdbf604d1c21862ef00dbdf9bbdde991fea37085939da21d7
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/431946152/robux-hack-generator-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/roblox-hacking-script-hub_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/adidas-roblox-shirt-free-design-high-resoulution_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/best-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-that-thing-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-pints-on-earn-robux-gg_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-account-2021-december_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-printable-roblox-cupcake-topper_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-accounts-2021-with-robux-real_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/fashion-frenzy-roblox-free-online_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-promo-codes-2021-july_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-without-human-verification-and-email_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/release-boku-no-roblox-remastered-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-denis-daily_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacker-roblox-shirt_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34BE 22752 bytes
SHA-256: 630f632abd0aa705ab22c88566a878890f674c87adf415b8e37f44712c5fc95b
font_01_sfnt_off000067ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EC 18824 bytes
SHA-256: 6a2f4fb47bcac7a1427eb84fb186ae35d3638566a93e34d85c8a35338f058712

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