Malicious PDF — malware analysis report

Static analysis result for SHA-256 d050da1a4e2d73d3…

MALICIOUS

PDF

46.6 KB Created: 2020-09-01 03:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 014e8477c1c87158236f3cde2a502946 SHA-1: a3ee624f7fee8de45ba0da6e88fd21ac043b814a SHA-256: d050da1a4e2d73d33b5b9ce247a0a3c74967b7f151595ac93c8181902bca72ff
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the document's primary purpose is to redirect users to malicious content via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.ru/wix?keyword=aberturas+de+xadrez+para+leigos+pdf+completo
    • https://cdn.shopify.com/s/files/1/0431/8553/7175/files/bleach_brave_soul_apk_data_offline.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/wexuxazefap.pdf
    • https://cdn.shopify.com/s/files/1/0433/0913/8084/files/69225661033.pdf
    • https://static.usrfiles.com/ugd/99a8f2_8957993dbb23460da455fd0feb1d984c.pdf
    • https://static.usrfiles.com/ugd/fbccce_ecd467f46bca48139d0d3d8439ca5e0a.pdf
    • https://static.usrfiles.com/ugd/1b8612_62ebd94db27b4a80955f14ce1a47b8f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5c3234a0c6d4ca9ad8487bff3f9df42.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd5ef37642bc4873ac13c8510e4a1d63.pdf
    • https://static.usrfiles.com/ugd/1f5cef_021cdcd748e84c0cae4e74c4fe2e5a9f.pdf
    • https://static.usrfiles.com/ugd/963627_025208500acd4c8dbdf380ddeedc8613.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/motidafesovilatidadut.pdf
    • https://cdn.shopify.com/s/files/1/0433/8660/1635/files/basic_life_support_red_cross.pdf
    • https://cdn.shopify.com/s/files/1/0437/5992/7448/files/42289317975.pdf
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/19320488956.pdf
    • https://cdn.shopify.com/s/files/1/0431/9028/8541/files/fuvelatebetuzesenojiz.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006928.bin
87988f281b136690d49acf8f0ccc750490e5daedc2b8fa8822b4df27c7f04b62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6928 5720 bytes
font_01_sfnt_off00007c95.bin
032e6e11ca6f64c876e34eb738d5e911a849ef1989f9de2c88636eb5a5f1b832		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C95 15692 bytes

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