Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb960de81197c43f…

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 16:10:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8f14fda5422eed5f0753d9bef1e42e54 SHA-1: da7134dc60b81ebce6f099ffb274e9c5f3c75dba SHA-256: cb960de81197c43f87afc35197e8d27612213077755e17b9508c53b0b7784046
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 0.9796

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/431946152/rblx-gg-free-robux-game-hack PDF link annotation
    • https://www.themerchantshouse.co.uk/uploads/files/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/roblox-free-hats_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/ispoofer-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/pokemon-go-free-remote-raid-pass-2021_GM1094591345.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-hack-2021-ios_GM406889139.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_off00005364.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5364 26060 bytes
SHA-256: de07221749a8dc2283ec2809635aadc541a1c836bbd6d63d816f56f4e7523c94
font_01_sfnt_off000090d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D2 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009a84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A84 18376 bytes
SHA-256: 79d8ff6bb54f2bd25fce5899da6b269aa8d0d1da5a030d2c5dfc49c812010b5b

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