Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed2f03e815ad3c29…

MALICIOUS

PDF

41.7 KB Created: 2020-09-08 01:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c130515f7e05dc7ea3ead98dab48cbd SHA-1: 2f9948af8d46adb117d38162f2dfb8d5f0e8222b SHA-256: ed2f03e815ad3c293794b78b2669f5c5edad1ee4e8679458471b9ee8f42fbeda
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=restaurant+hostess+cv+template'. This URL is presented within the document body, disguised as a 'restaurant hostess cv template' to entice users to click. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The ML classifier strongly indicates maliciousness.

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.club/wix?keyword=restaurant+hostess+cv+template
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/56002415729.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6573/files/pimuge.pdf
    • https://cdn.shopify.com/s/files/1/0432/8944/4510/files/83185450147.pdf
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/arcsoft_totalmedia_3._5_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0437/1261/0457/files/free_template_for_website_in_bootstrap.pdf
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/37126576349.pdf
    • https://cdn.shopify.com/s/files/1/0439/7573/7502/files/vuroroguluwi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4522/2557/files/kog_maw_build_s6_adc.pdf
    • https://cdn.shopify.com/s/files/1/0434/9142/6469/files/bodybuilding_program_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/jugidu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/how_to_get_thunderfury.pdf
    • https://cdn.shopify.com/s/files/1/0427/4854/3142/files/20372279422.pdf
    • https://cdn.shopify.com/s/files/1/0448/1702/3138/files/algebra_formulas_for_ssc_cgl.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_off0000651e.bin
8a72bc26cc8059e2393a831b7e90dfc07c0df7f17979cc801fb79bf6cd87ba8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x651E 5240 bytes
font_01_sfnt_off000076d0.bin
ab085a4a96fa2f5f761f4a1f0b1a8ae76f36e2cb7b405fc799f25a176dd7f781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D0 10364 bytes

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