Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e6eed3cfeac5e7…

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 08:59:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c68a17f3ebc7d47f7c85b9a036729c63 SHA-1: 14f80a1b59cd9596e669fbb7a76444cbda2e6a1a SHA-256: f6e6eed3cfeac5e7d8495788b12397f14b77e6847dae680c745c6e3059bb2795
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based lure. 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 0.9865

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.online/app/431946152/scripte-free-robux-game-hack PDF link annotation
    • https://kupinapopust.mk/pub/img/userfiles/files/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_004_off00005035.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5035 24648 bytes
SHA-256: 0fd62d8ab0acd6fd6c2de1a9384462f510dc4203aedc5730b8455cc3b923ef01
font_01_sfnt_off00008922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8922 18416 bytes
SHA-256: aac30ee49e63bb94cb444f1ea99a7cb959e38a23db6ce25cd41581bff8f2c1d8

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