Malicious PDF — malware analysis report

Static analysis result for SHA-256 e328eebdcd1b88c1…

MALICIOUS

PDF

45.9 KB Created: 2021-05-11 08:38:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 14fc0762eed9bcd116621d0645c0fee4 SHA-1: abd0bf572e6612e1876689eb9c886bc6fc25e75f SHA-256: e328eebdcd1b88c1448457b71dd2e107c9f5608602c28d545c2d084865239836
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 0.9432

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 https://netcdn.xyz/app/431946152/roblox-report-hacker-game-hack PDF link annotation
    • http://library.stieyapan.ac.id//repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C6 26464 bytes
SHA-256: ffb1ce5834af3773ab89226eecec75f2652bc8ade5d1c5802f1c385fcc5b327c
font_01_sfnt_off00008645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8645 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000902f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x902F 18464 bytes
SHA-256: 79c09b5b6208491040c3b62148bcc9153cd4a1890769045a69a367cda9837255

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