Malicious PDF — malware analysis report

Static analysis result for SHA-256 a74b95d3ce3049f4…

MALICIOUS

PDF

35.6 KB Created: 2021-07-06 05:37:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0070f4083bcfe456a9ad45bbac7f47ad SHA-1: e78c38a4f1057fbaf871a405f917fa4f49bec48a SHA-256: a74b95d3ce3049f49689453c9d8e83454075c40186afdd2f4d0fcdafaed8923d
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/show-me-how-to-get-free-robux-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-vido_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/fake-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/pyudry-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-cards-in-coin-master_GM406889139.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_off0000334b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x334B 22436 bytes
SHA-256: 9a9393ab8acd4eeb7a043700a0396eeb1201db5e9ae82e04a60c2840ad893a78
font_01_sfnt_off00006545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6545 19348 bytes
SHA-256: d26d04a97ef4ef1984db51a9dbb6ae7fe4887511724be7c0a10401d3a20c9a41

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