Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea11a0e3843eee08…

MALICIOUS

PDF

31.1 KB Created: 2020-08-31 07:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57915f8370e34f60ed5b09fa9ae2f649 SHA-1: 6095bde67c4477b479b14b51bb74251d675bfd4b SHA-256: ea11a0e3843eee08dfd05f5a3042b1cdc649842a36d8abd752a2c4061f098803
120 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.com/wix?keyword=ndc+engine+bearings+catalogue'. This URL is presented within the document body, disguised as a product catalog, to entice users to click. The file also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute 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.com/wix?keyword=ndc+engine+bearings+catalogue
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/space_engineer_servers.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3899/files/17583785252.pdf
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/best_android_tablet_under_9_inches.pdf
    • https://cdn.shopify.com/s/files/1/0434/6901/3158/files/66489029227.pdf
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/plan_b_free_lost_phone_tracker.pdf
    • https://static.usrfiles.com/ugd/e1d12c_3e868c24ce2e49e09f8cfb1a451292b3.pdf
    • https://static.usrfiles.com/ugd/8d57bd_75e059fa72de498a82a69a5ebbcdd3b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_0700a533236345458e12373462f05a7b.pdf
    • https://static.usrfiles.com/ugd/09273f_3f242b5d7327402aa51ea0bf137a3950.pdf
    • https://static.usrfiles.com/ugd/271e65_94cdf4c4b2004a9e9b46926cc8f6f37d.pdf
    • https://static.usrfiles.com/ugd/5438e3_c89d8fd64e2c46f7a6cb1550cde061d0.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_93094e15762d47c19092bbd01de40b50.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_7f4999e7bfaf4abcad7a1953cabad313.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_off000040db.bin
b3f23c74ce493fee39239f45580b1ce3c194439cd801728a7720a21bcb94d783		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40DB 5216 bytes
font_01_sfnt_off00005297.bin
25b67f83b2c15f1535299abe750720e2930fe49692fe69385c4720ce67b18e48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5297 8604 bytes

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