Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec36f1a0177d3a0…

MALICIOUS

PDF

47.4 KB Created: 2021-06-03 15:53:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4591ae167be9c7bb2ffb1cfd042b3fde SHA-1: 17e4b51e717e90e2de0df4fca7951d31dcfd0ee8 SHA-256: bec36f1a0177d3a0cfc0997095279e478c233318593a1809b1c60ee13fbb5843
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 0.9769

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.online/app/406889139/fighting-free-card-coin-master-game-hack PDF link annotation
    • https://www.themerchantshouse.co.uk/uploads/files/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/tiktok-for-free-install_GM835599320.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/open-coin-master_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/free-views-tiktok_GM835599320.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/free-robux-hack-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005312.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5312 25372 bytes
SHA-256: 124450f074cc57082cc4d5ced87f92d6e652d6ecc639d0e2b3ff3bf2f2a98be7
font_01_sfnt_off00008ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA7 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9692 18336 bytes
SHA-256: f0cd4d6bae61bb9f7721c88e5b38a7df4c9de99d8fb8d81dbaccb772e8fa5d98

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