Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b6fa7791bc80c5…

MALICIOUS

PDF

55.7 KB Created: 2020-08-30 23:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86880049b4445efd8002d2d8f29449bb SHA-1: c85d594e408ed05e3a285769290f51859b1632aa SHA-256: 42b6fa7791bc80c56cb69c0aa47868b519efd3491209565d6d40487898f0f688
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is likely used to funnel victims to a phishing or malware distribution site. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farms used to boost search engine rankings for malicious content. No scripts were extracted, but the presence of the malicious redirector is the primary indicator of compromise.

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=the+complete+guide+to+facebook+adver
    • https://cdn.shopify.com/s/files/1/0434/2179/4460/files/vixeponinetaravimonixuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/kizekiniw.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/remededaxu.pdf
    • https://static.usrfiles.com/ugd/599f1c_1463dda8f5474ff1b35bab2c0e109b1c.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_b8aeba1ba982413bbc9007391f8fb2ec.pdf
    • https://cdn.shopify.com/s/files/1/0435/9372/8158/files/buwijemetomotirojugan.pdf
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/xapuwanabeta.pdf
    • https://cdn.shopify.com/s/files/1/0439/5496/2590/files/29945785260.pdf
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/sin_cara_without_a_mask.pdf
    • https://static.usrfiles.com/ugd/20d83a_ed97e730755c453a9b8ae28433e0f770.pdf
    • https://static.usrfiles.com/ugd/b8c837_f989ae8e67454aa888573520db37d1a6.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ef0.bin
57e86711f841f34e5981f3cd6a8a1eda6b33cb27a6b8513940fe8115f002e4c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF0 5380 bytes
font_01_sfnt_off0000a143.bin
9652337e02eb8245b803fc38830f05372585597f6e8e9cbd5c3c269910565c31		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA143 10212 bytes
font_02_sfnt_off0000c41b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC41B 4324 bytes

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