Malicious PDF — malware analysis report

Static analysis result for SHA-256 d15eeef55e431ab5…

MALICIOUS

PDF

45.3 KB Created: 2021-05-14 21:40:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0126a2f6981e31b21b394b3a75c41f27 SHA-1: 88a1613a14608276ccbd9568b8662ccbe3ffbb7a SHA-256: d15eeef55e431ab5c06a8f6c23490bcefcdc4bea2d8a84f2ef29ae78344addaf
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 https://netcdn.xyz/app/431946152/free-robux-easy-game-hack PDF link annotation
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/worst-client_GM479516143.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/mc-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/robux-giver_GM431946152.pdfIn PDF document text
    • https://rblx.landIn 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
stream_003_off000047c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47C5 30664 bytes
SHA-256: a04d80f3beb4665195a28b820e16ee3679962716a1c2b17039607152b1302d1a
font_01_sfnt_off00008e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E7F 18420 bytes
SHA-256: 93fb4fe90c413bceeeea5373daaca89ae05c83417e443247d622c1bd09cfd34e

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