Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5a485f2c48cb3a…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 11:16:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4cec2a580910fe11897605798bda8fb2 SHA-1: f9e624b33ad354f8cc79332ccdea70a11e4b1ae3 SHA-256: ba5a485f2c48cb3a1e27e4f2325a78e6f3c3c1929ffbcaaab42917922a507459
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-coins-and-spins-for-coin-master-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-button_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/fe-dll-hacks-roblox_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_off00002ed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED2 22456 bytes
SHA-256: 61ba1030a8f429a6af6ef8fb7d6f125cbf21e7df362012cc9d7e0f244a66a8d5
font_01_sfnt_off000060da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DA 18348 bytes
SHA-256: c90f632020bcb1e728f62a43997badda2860e0d329262e99dedc1f8a12c39115

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