Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cf9734df169f882…

MALICIOUS

PDF

39.4 KB Created: 2021-07-03 20:59:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 05a64e4ede3a4fea7b1c5fd057c7e572 SHA-1: 51839d40635ea825c3d99378cfd6137c21b7b14b SHA-256: 2cf9734df169f882f62bc95d867b5444473c30bdc539d3dd087444bac81c30e3
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 0.9659

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 http://netcdn.tw/app/479516143/minecraft-bedrock-server-hosting-free-game-hack PDF link annotation
    • https://infopromotransvision.com/ckfinder/userfiles/files/roblox-edit-money-value-cheat-2021_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/how-to-hack-gamepasses-in-roblox_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/roblox-free-group-funds_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/how-to-get-free-robux-instantly-without-human-verification_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/easy-ways-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/robux-app-free_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/how-to-hack-lab-experiment-roblox_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/minecraft-multiplayer-free_GM479516143.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3235 21748 bytes
SHA-256: 472399722e10b096d0a82f5a41a006435bfc0541ad9394160c77931a9ea54a6f
font_01_sfnt_off000061de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DE 2848 bytes
SHA-256: e494dfbc17a31b8b677e20f5e37602c538292163208a26380855969ce973a69b
font_02_sfnt_off00006b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B93 2800 bytes
SHA-256: 1756bf2370268b82899ca819fa059e16c32fca103da24d388e887c3e7a349852
font_03_sfnt_off0000758a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x758A 18672 bytes
SHA-256: c45ccb7756ad31f0eb1659f3c43916dbd490baa96d6c6b1730beaec095da97be

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