Malicious PDF — malware analysis report

Static analysis result for SHA-256 569dd2b6c5751086…

MALICIOUS

PDF

41.6 KB Created: 2021-05-14 05:07:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c6b171ad566a073e1f038def1ab4e859 SHA-1: aaf4b9765916a84e3109f88d11d0ab2408b1bec0 SHA-256: 569dd2b6c575108672fefe8a279083da5c4c8792853df8097b4cce1b5d452de5
142 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links that redirect to a link farm, primarily promoting game hacks and generators. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a campaign to drive traffic to malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-daily-spin-free-game-hack PDF link annotation
    • http://axia-verlag.at/images/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/free-robux-group_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/roblox40com-robux_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/free-spins-on-coin-master-game_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
stream_003_off000047ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47BA 24604 bytes
SHA-256: f1c367d737519d338038111bc474adf4c3669d0734be82eebb02f1e9f05a5672
font_01_sfnt_off0000800f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x800F 18308 bytes
SHA-256: 213ea0fed5678e19eff32fcc5d46e69a4f1b73f67043b57a178cf12547108d4a

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