Malicious PDF — malware analysis report

Static analysis result for SHA-256 54014a0cbfd49399…

MALICIOUS

PDF

34.2 KB Created: 2020-08-31 03:13:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aeb7c6e024dcd3b1c1b9d24fa01a14b SHA-1: cc3d507847c1febffb9220b2ba1995450114baea SHA-256: 54014a0cbfd493997643dee82aedae736f5628845f48adeb2ec7b128116e0d61
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=tecumseh+5+hp+snowblower+engine+manu'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on 'static.usrfiles.com'. The document body appears to be garbled text, but the presence of the redirector URL suggests an attempt to lure the user to a malicious destination.

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.cc/wix?keyword=tecumseh+5+hp+snowblower+engine+manu
    • https://static.usrfiles.com/ugd/271e65_861042668b2842809d19d9af0e8a6144.pdf
    • https://static.usrfiles.com/ugd/61b8bf_bff318dc8bde4039922c25a209fd2134.pdf
    • https://static.usrfiles.com/ugd/20d83a_0a267d009aa7420885b8af7d40fb048a.pdf
    • https://static.usrfiles.com/ugd/b8c837_32a12841d5254b648acbf60ff0a1acdd.pdf
    • https://static.usrfiles.com/ugd/f8de3e_7cddb5adca6b4688a9dc17c84da08626.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1402562920.pdf
    • https://static.usrfiles.com/ugd/3aee12_3427c399b24b4f6191deff7c7bec7b36.pdf
    • https://static.usrfiles.com/ugd/516793_e9270b021ebc419093fedac196617d54.pdf
    • https://static.usrfiles.com/ugd/dc51bb_a6c4024b8042402599b268f7cecb88a2.pdf
    • https://cdn.shopify.com/s/files/1/0433/4298/7423/files/migotaluzizifizofoxali.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/spreadsheet_vs_excel.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/ditiximozodidapakop.pdf
    • https://cdn.shopify.com/s/files/1/0439/8075/1006/files/statistical_analysis_of_network_data_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0430/9912/7959/files/21300386663.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_off000046e9.bin
340c6fb63090ad8bf0f1db06db7cd0d9568aa559faf5d6aeb1e6a3f60085ae9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46E9 5652 bytes
font_01_sfnt_off00005a0e.bin
2ed255a30fa12983a369260ae44b05155715803356524def18a22496a55f7cbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0E 10308 bytes

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