Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea907489865e2927…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 10:53:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fe8ed9974849316e779f7c51ad697f9a SHA-1: 4fd8355fa71583cb2bb3b87512d72a763de7a381 SHA-256: ea907489865e292737ba13501c975ba237e19e9ef12059a3a59dc0cef7716045
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/roblox-free-hair-girl-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/my-roblox-group-got-hacked_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/cheat-roblox-strucid_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-noclip-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-jailbreak-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/como-vestirse-hackear-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-download-apk-hack-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hack-for-roblox-nijitssu_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-free-draw-script_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-hack-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-free-vip-for-all-places_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-giftcard-codes-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hack-roblox-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-generator-no-surveys-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-robux-hack-2021-no-download-no-survey_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_off000032e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E4 22860 bytes
SHA-256: 9727f89211ae9588019205caadd89b9f7a53c7244569c43e02b2a1983ac05ed6
font_01_sfnt_off000065f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F3 18768 bytes
SHA-256: 152b03728ddecf30a4d8275c62085ff040828e8cf06d0f5097c5d769c49d0b50

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