Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cf0cdc9cfcda2bb…

MALICIOUS

PDF

34.6 KB Created: 2021-06-27 17:33:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8a11c9e1e8399c6400df852107ae7f56 SHA-1: ddf7f20e1c258d8bd3f21e8f7e6d6f072a893138 SHA-256: 7cf0cdc9cfcda2bb2bafefd0edaf82ffc16381f7bf4872c3ab889fadcbf338f7
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.co/app/431946152/robux-hack-android-2021-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-generator-hack-exe_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hack-para-poder-hackear-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/cheat-roblox-bad-business_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-1-2021202100-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-character-customizer-free_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-use-cheat-engine-67-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-roblox-redeem-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-no-human-verification-or-survey-ios_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_off00002f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0A 22272 bytes
SHA-256: 457138f9bc4a3009009e6ef5dc1316d9b7aa408ff7169275bbf5ac438b5ae0b9
font_01_sfnt_off000060cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CF 19416 bytes
SHA-256: 7ccd20ce5cde98b72a044a3b511a9b2e0c5fe008897104cb1322c8b6bbb87614

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