Malicious PDF — malware analysis report

Static analysis result for SHA-256 529de0d0fa4236cb…

MALICIOUS

PDF

39.6 KB Created: 2020-09-05 05:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 413b7770b8ae2f6ef7dd742ec1d2257b SHA-1: aac60e72500edf6cbfcb5a538417fd1a522f9a35 SHA-256: 529de0d0fa4236cb9a90a5da148b257494e05749904434d1cb1bd3f4e2a2611d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=crisis+management+powerpoint+template'. The document body, though heavily obfuscated, also contains this URL and references 'crisis management powerpoint template', suggesting a social engineering lure. The file also contains a large number of embedded links to static.usrfiles.com, indicating a link farm strategy. 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.me/wix?keyword=crisis+management+powerpoint+template
    • https://static.usrfiles.com/ugd/5b604d_914483c49dad46ae9ea3ad6e74e61887.pdf
    • https://static.usrfiles.com/ugd/1be480_34f4a60192e645d183ee6a61a021365c.pdf
    • https://static.usrfiles.com/ugd/769f78_9cba1c8c901f463e965d47b2d076e321.pdf
    • https://static.usrfiles.com/ugd/2f07a1_f5cf828b2fc44198a966a9d1d8b09504.pdf
    • https://static.usrfiles.com/ugd/cf14a4_5ac2d51757774238a2cfadaeac6fb0e4.pdf
    • https://cdn.shopify.com/s/files/1/0430/9549/0721/files/identification_card_template.pdf
    • https://cdn.shopify.com/s/files/1/0462/2788/2133/files/internship_report_sample_singapore.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/sulod.pdf
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/62891128026.pdf
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/mamevolekafaxisugoduwenig.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/18974027589.pdf
    • https://static.usrfiles.com/ugd/6c032c_526ea5a035524f6f9515a1b1d6bcd875.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_1def0c90f4f64477bee6e148b6547adf.pdf
    • https://static.usrfiles.com/ugd/9757e7_323af47446ae4fbf84840828c42cec03.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_off00005e8f.bin
52bcb805bd4caddcba245b738983672ef726ac3636f14eaa410e91fafb35d0e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8F 5136 bytes
font_01_sfnt_off00006ffa.bin
f8e986660b998626b58e5a5118805383baae11f2dc4946f76226483b2b3fc780		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFA 9796 bytes

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