Malicious PDF — malware analysis report

Static analysis result for SHA-256 befdfe78bfc01c9e…

MALICIOUS

PDF

41.4 KB Created: 2021-05-11 03:56:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d897cac222b2124cb1cfe35ce994e9df SHA-1: 80f2744ac7a5ceef90e80a0c6b13a927909b0d62 SHA-256: befdfe78bfc01c9e2fed348cf8eee65cc445c718f083918bf9fa07d61537dfaf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a website advertising game hacks and free currency. The primary heuristic indicates a 'free generator / game hack' redirector lure, suggesting the document is designed to trick users into visiting a malicious site. While no scripts were directly extracted, the PDF structure itself facilitates the redirection, aligning with common social engineering tactics for malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/freecoins-game-hack PDF link annotation
    • http://perpus.smkn1pemangkat.sch.id//repository/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-robux-please_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
stream_003_off000048dc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48DC 24940 bytes
SHA-256: b8a25b0b663e984365fa330c19548409d83442197ca5db4db7c4f1346dba4d15
font_01_sfnt_off0000824b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824B 17380 bytes
SHA-256: b7451c9dd0ac59d2b5cb55b76db2f7cf076c87adc9efeb70e2d733c8c551e0a5

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