Malicious PDF — malware analysis report

Static analysis result for SHA-256 355660a5bc670d49…

MALICIOUS

PDF

42.8 KB Created: 2021-05-13 04:48:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: dcaef606153b13ecd668e46e01188293 SHA-1: 06c7ad940d620d501bf0e14c8d69337a667f2d0a SHA-256: 355660a5bc670d499ad6142ad10ee99f9041f5ceeeb04dd879bac067592e670d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, with a primary URL pointing to a "game hack" lure. This suggests the document's purpose is to redirect users to a potentially malicious website. The ML classifier also flagged this PDF as malicious, increasing confidence in this assessment. No scripts were extracted from this sample.

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/ultimate-free-spins-coin-master-game-hack PDF link annotation
    • https://www.cj-aircons.co.za/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/free-robux-link_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/free-roblox-acc_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://www.cj-aircons.co.za/images/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b10.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B10 25024 bytes
SHA-256: f54a5ae229959bedb6b9ed3a7836091c24f728e0a2b73f493f2819ead7337c77
font_01_sfnt_off000084f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F0 18408 bytes
SHA-256: 069e81d139e88509d82e8224148cc48daf359350e2997d733607192457d28ec7

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