Malicious PDF — malware analysis report

Static analysis result for SHA-256 5397602340f4b0fe…

MALICIOUS

PDF

43.6 KB Created: 2020-08-21 10:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77d322da67cb87111c047a23d5e745e3 SHA-1: 6b6f1fb3de2efca764337c0334e820288b65a4d6 SHA-256: 5397602340f4b0fe28b09fa76021ba4186fdedecb97a0ae7781b94e1a6437868
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=audio+player+app'. This URL is presented within the document body, suggesting a social engineering lure. The presence of a PDF link farm heuristic further indicates an attempt to distribute content through numerous links. While no scripts were extracted, the primary attack vector appears to be user interaction with the malicious link.

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/pify?keyword=audio+player+app
    • http://files.epiphanyexcelcenter.org/uploads/1/3/0/8/130874128/dejufuvuzu.pdf
    • http://gonobe.artzplatform.com/uploads/1/3/2/7/132740764/50f111b2f.pdf
    • http://files.paraspear.com/uploads/1/3/0/7/130775823/311e57eac.pdf
    • https://cdn.shopify.com/s/files/1/0430/3860/5461/files/78887081937.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/vupewowudusovilusoripabe.pdf
    • https://cdn.shopify.com/s/files/1/0429/0628/8291/files/id_checking_guide_2016.pdf
    • https://cdn.shopify.com/s/files/1/0434/1989/3927/files/40605334614.pdf
    • https://cdn.shopify.com/s/files/1/0463/2536/6945/files/ranalumemadote.pdf
    • https://cdn.shopify.com/s/files/1/0439/3733/3406/files/negenizasak.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/chesnara_plc_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0440/1407/6069/files/avery_label_maker.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/givudane.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/gijitezexi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1035/8423/files/brew_uninstall_mysql.pdf
    • https://cdn.shopify.com/s/files/1/0434/7691/0242/files/negebe.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_off00006e73.bin
9a4488d127795c803272f1782543699495f6641de1e3672d4ff94ab98a6f6344		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E73 4868 bytes
font_01_sfnt_off00007f12.bin
fba31ee70fd4d0504f9a43844153e84d4153c063a93a876df37ad7c186ffe5c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F12 10164 bytes

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