Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec99d6484eed7970…

MALICIOUS

PDF

36.9 KB Created: 2021-07-05 08:04:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7008b324d3ef8451e2efe973b67f8622 SHA-1: 511e153687a4ee7d295ea898823a4115645279f3 SHA-256: ec99d6484eed79702090f50d6aa182863fd82cf8784fa701a7947d197f8aaab9
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 0.9980

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/406889139/coin-master-hack-tool-v1-9-download-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/games-on-roblox-where-you-can-get-free-items_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-link_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-free-emotes_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-darkness-2-cheats_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/https-web-roblox-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-android-robux-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/pokemon-go-free-and-verizon_GM1094591345.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-hacks-in-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-elements-cheat-engine_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000376a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x376A 23108 bytes
SHA-256: 40f407920cc2715ede2ef34c340801a661ed3087a288427346e83267727f57e0
font_01_sfnt_off00006b57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B57 18988 bytes
SHA-256: d4387edf03587a57fa832e3ac88b824669e47e327f47ecbe021b043780cb1128

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