Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c8906086ff5017a…

MALICIOUS

PDF

49.8 KB Created: 2020-08-20 02:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a516f90fecf05ce26374f22f3222f2c SHA-1: 5cf6898c2f97da0a5f8e558b7676c1834343073c SHA-256: 9c8906086ff5017a5e7cb42ce853a37c2c089b9acc85ac7155814a848829a913
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. This suggests the document is designed to lure users into clicking malicious links under the guise of an event guide. The primary malicious URL is ttraff.ru, which is likely used to redirect to further malicious content. No scripts were extracted from this sample.

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/pify?keyword=valiant+force+event+guide
    • http://bunuto.erikakralj.com/uploads/1/3/2/6/132683001/4dfa653c8d4.pdf
    • http://kopede.capecodacoustics.com/uploads/1/3/1/3/131380213/854f4b472.pdf
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/matukixunabewiwume.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/namapadoxabawevuka.pdf
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/18267749946.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/fajitidoketelovexa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2241/7046/files/seismic_stratigraphy_course.pdf
    • https://cdn.shopify.com/s/files/1/0433/7729/5516/files/college_letter_of_recommendation_template_from_teacher.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/xasujatidudaxorum.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jakenetukuzalavat.pdf
    • https://cdn.shopify.com/s/files/1/0437/9141/7495/files/ziforemuxotet.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/xenibejokakugevetewogenup.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_off0000855a.bin
681511434bc1025845fac10aa3967d8c6f01d83f3bb3cabf3959ce197b34ac45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x855A 5036 bytes
font_01_sfnt_off00009690.bin
4dd6342b94b441c01be28c283012ff9cc84a81d693548b5f4cb1908c3974df84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9690 10648 bytes

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