Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0006aa8550be9ee…

MALICIOUS

PDF

35.0 KB Created: 2021-06-21 16:20:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 104fc1034e36f7e7c7632ce6a943887f SHA-1: fd500bb662677371830799d8035129779d5ba4d7 SHA-256: d0006aa8550be9ee8a6355b97d6f43cbde8baec9c030f3a1921e45c038bc70c8
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.co/app/479516143/mc-update-game-hack PDF link annotation
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/robux-without-verification_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/roblox-upload-audio-for-free_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-coin-master-spins-daily_GM406889139.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_off00003567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3567 22052 bytes
SHA-256: 66283785e91fc367452dbac9b42cc1af6c4a44ebad1c849fb17974c5213b0d40
font_01_sfnt_off00006631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 18272 bytes
SHA-256: 82dc0b43539ef2d7bbb3eb626da65d3f7def0b72e0a32f2638731d13eaa39649

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