Malicious PDF — malware analysis report

Static analysis result for SHA-256 560de643ff0c9cba…

MALICIOUS

PDF

47.9 KB Created: 2021-05-14 05:10:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0f4a9a9f5a5a9f86811e55334282e091 SHA-1: 1da0d4e5c136edb02e4a120f70aea4aebc135d65 SHA-256: 560de643ff0c9cba6755bbb678a8792cc0528bd701c17e6f06408c398796a505
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which are SEO-optimized to appear as guides for hacking games like Coin Master and Roblox. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a coordinated effort to drive traffic to potentially malicious sites. The ML classifier also flagged the document as malicious with high confidence. The presence of these links and the document's theme strongly suggest it's part of a campaign to distribute malware or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 4

  • 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.
  • 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-hack-without-human-verification-india-game-hack PDF link annotation
    • https://bapalaye.org/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/make-free-robux_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://bapalaye.org/images/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://bapalaye.org/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • https://bapalaye.org/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://bapalaye.org/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • https://bapalaye.org/images/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://bapalaye.org/images/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://bapalaye.org/images/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://bapalaye.org/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://bapalaye.org/images/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • https://bapalaye.org/images/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • https://bapalaye.org/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a38.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A38 24820 bytes
SHA-256: 33dd1761c193def07428682ec93178f789bff6d422c6ada50035fa62000db786
font_01_sfnt_off000082cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CD 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off00009758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9758 18788 bytes
SHA-256: f03f84e40d510781fd9acf302c96448e3582cb87a5c2d27401c18c9e1d195815

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