Malicious PDF — malware analysis report

Static analysis result for SHA-256 de5d7a79e7d0eeda…

MALICIOUS

PDF

43.7 KB Created: 2020-08-30 05:13:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86bbaa617be315635eea68067f732891 SHA-1: 29362e81c9d2b4fdfb1bd5af73565ab3e5a5de20 SHA-256: de5d7a79e7d0eeda56f23eb854f96211ca1c00f9fe71f1f0af069fa73b5f2399
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, with a critical heuristic firing for a PDF link redirector. One of the primary links points to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=bermuda+fishing+guides', which is flagged as malicious. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic, potentially leading to malicious content or phishing pages.

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.com/wix?keyword=bermuda+fishing+guides
    • https://cdn.shopify.com/s/files/1/0438/3725/9936/files/guinea_pig_devil_s_experiment.pdf
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/happy_pongal_images_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0428/8600/4899/files/whan_that_aprill_with_his_shoures_soote.pdf
    • https://cdn.shopify.com/s/files/1/0429/5006/6339/files/2020_telugu_calendar_with_festivals.pdf
    • https://cdn.shopify.com/s/files/1/0428/5608/7708/files/19486136193.pdf
    • https://cdn.shopify.com/s/files/1/0449/9764/0360/files/kakajipemereja.pdf
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/le_journal_el_watan_d_aujourd_hui.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f125fccc3ae4256ac7835c55a89af43.pdf
    • https://static.usrfiles.com/ugd/50c35f_318e1c5c743d40bfa4fe78c1a30d4379.pdf
    • https://static.usrfiles.com/ugd/d4a9d6_a65253151d9e4a33b08da7ae21adbb1a.pdf
    • https://static.usrfiles.com/ugd/384ea4_542ce59b629d46bc89da8178c4069686.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_14fac9e4be8c47428ea3117d7fafd143.pdf
    • https://static.usrfiles.com/ugd/d1d005_c86753c0b9b148afb96ffcf4515e60ba.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_off00006e04.bin
09f3d8b5bc3fc6ed2627fe059b30db9d0045b5f83030f34edb9f7d4ca603bb83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E04 5340 bytes
font_01_sfnt_off00008008.bin
11c44cd4c8cf5d2627f4cb9c910dad0bb52a1e4923ddee7fe5d70ec73f482d84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8008 10040 bytes

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