Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb298f49e462229…

MALICIOUS

PDF

41.8 KB Created: 2021-05-14 17:09:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e29021a38013a99b13f3ecad8c7baf66 SHA-1: e8f75763f7a0fbd6019428a1074e390bef7074c5 SHA-256: 8fb298f49e462229d2b4002b0315a881483bb98061b34052a1e8dd1698869715
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA 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 0.9971

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/online-coin-master-free-spin-app-game-hack PDF link annotation
    • https://www.laarsenco.nl/images/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • https://www.laarsenco.nl/images/get-me-robux_GM431946152.pdfIn PDF document text
    • https://www.laarsenco.nl/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://www.laarsenco.nl/images/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • https://www.laarsenco.nl/images/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • https://www.laarsenco.nl/images/coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.laarsenco.nl/images/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.laarsenco.nl/images/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • https://www.laarsenco.nl/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.laarsenco.nl/images/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.laarsenco.nl/images/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://www.laarsenco.nl/images/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://www.laarsenco.nl/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.laarsenco.nl/images/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • https://www.laarsenco.nl/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://www.laarsenco.nl/images/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://www.laarsenco.nl/images/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.laarsenco.nl/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://www.laarsenco.nl/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.laarsenco.nl/images/free-robux-no-survey_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_off000049c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C6 24980 bytes
SHA-256: 1a49513e58b06b2ace66d2a3df65dfb5263be2c06e3bbabe83f7e9f01344a7a7
font_01_sfnt_off0000821b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821B 17960 bytes
SHA-256: 00bab635c2a0cb1a50d20431aa9d2604bce9bd5ee105395901c4159e72e6ab85

Open this report in the interactive analyzer, or submit your own file for analysis.