Malicious PDF — malware analysis report

Static analysis result for SHA-256 9282b89e553aa651…

MALICIOUS

PDF

39.5 KB Created: 2020-08-31 01:19:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77d9a3a7b2db880d54ea5459db2bc574 SHA-1: 9ffe93e5241babee1c80158e8244e52abbd15fe7 SHA-256: 9282b89e553aa651969c8e587fad5231729f3bff4e714836d2de1f78305fe348
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used in SEO link farms to manipulate search engine rankings or to distribute malicious content. One of the embedded URLs, 'https://ttraff.ru/wix?keyword=vector+control+and+dynamics+of+ac+drives', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary lure. The presence of numerous links, including the malicious redirector, indicates a likely attempt to lead the user to a harmful website.

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=vector+control+and+dynamics+of+ac+drives
    • https://cdn.shopify.com/s/files/1/0434/6209/9109/files/25156048525.pdf
    • https://cdn.shopify.com/s/files/1/0440/6493/1992/files/45636379050.pdf
    • https://cdn.shopify.com/s/files/1/0433/1316/8542/files/bizuretotekaxovur.pdf
    • https://cdn.shopify.com/s/files/1/0431/1610/1793/files/92139848519.pdf
    • https://cdn.shopify.com/s/files/1/0434/7035/6632/files/lofosofelujotufizopato.pdf
    • https://cdn.shopify.com/s/files/1/0429/7850/8953/files/vurobodutalizolepunozi.pdf
    • https://static.usrfiles.com/ugd/b8c837_31e17141cec84f3680680dc50bba2ba8.pdf
    • https://static.usrfiles.com/ugd/37321e_3d2a9cc0d89e45f2851e14020f20ee4e.pdf
    • https://static.usrfiles.com/ugd/15cd4d_8171e4f251a24de28dbec6b9d5db94f5.pdf
    • https://static.usrfiles.com/ugd/221f3a_29c14df1c5104d75a0b73a677f3fc95c.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/66814896911.pdf
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/vatuwidukakowowe.pdf
    • https://cdn.shopify.com/s/files/1/0434/6078/8390/files/37534633927.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/xuxipaj.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_off00005c65.bin
d3fccac303c0a9a137016b788fea6152f8fbe17225bda82ce00310e306f3e745		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C65 5296 bytes
font_01_sfnt_off00006e5a.bin
abc2438163db6d5721b6d78e18c13abc4f2fe27a57a1633ef8b742335cb55d14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5A 10388 bytes

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