Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca394426ec3cb34e…

MALICIOUS

PDF

43.3 KB Created: 2021-05-10 16:17:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 25ca791646e8a7bea7ec52a0e5af9bf2 SHA-1: c431c801db534b1e9845ec7a30132c4676dd1180 SHA-256: ca394426ec3cb34e20d8e642830d94c7ddadd897be2e7085cf0a14bce5ca9373
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to sites offering game hacks and free spins, a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button heuristic further supports a malicious intent. While no scripts were directly extracted, the document's structure and embedded links suggest it's designed to trick users into visiting potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-free-spins-link-download-today-game-hack PDF link annotation
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/robuxfree-con_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coinmaster-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-reddit_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily-summary_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
stream_003_off00004daf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DAF 24508 bytes
SHA-256: a54c619cfde529e5902f7d7151f3a13c080d69c8dbd90f4118ce15ab3d9aa023
font_01_sfnt_off00008536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8536 18816 bytes
SHA-256: 7984ac734f2c2edb41e517847f194607c55f1e409037ad7870af27278dae38db

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