Malicious PDF — malware analysis report

Static analysis result for SHA-256 8410b73f84d5b3db…

MALICIOUS

PDF

38.0 KB Created: 2020-08-29 17:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9ba2d89aff4c390b63dc52aba11af7b SHA-1: 15e3b49c96f683edde5c0481337a692cad47cb59 SHA-256: 8410b73f84d5b3db03c58cb7fa92551ae31e2efcd64d7f397b112e45ce8121b8
150 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, a common tactic for SEO spam and phishing campaigns. One of the embedded URLs, 'https://ttraff.me/wix?keyword=craving+you+thomas+rhett+lyrics', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

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.me/wix?keyword=craving+you+thomas+rhett+lyrics
    • https://cdn.shopify.com/s/files/1/0465/1686/3134/files/pachelbel_canon_free_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0463/6649/0779/files/46549504614.pdf
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/65402735370.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c4124c12b6e44ecb468ccb43e47b410.pdf
    • https://static.usrfiles.com/ugd/0049ca_5881dbefbf2e4247bcc3dc83e43e020f.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ea1c3959d844548b409d93a3d539406.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8913/files/resumo_capites_da_areia.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/xivunirapudemejedima.pdf
    • https://cdn.shopify.com/s/files/1/0434/2104/0789/files/boys_don_t_cry_magazine.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_off00004b03.bin
a443975e2488b90500032e59f3239bd1e7e7f99ef28df1766012c31a40cfd8e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B03 5280 bytes
font_01_sfnt_off00005cd3.bin
535d7a262bdc3c55ea9cae3870353e6fc70076b2d86bd04ef92b90f426197003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD3 9628 bytes
font_02_sfnt_off00007d6a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6A 4324 bytes

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