Malicious PDF — malware analysis report

Static analysis result for SHA-256 f597d97998b4763e…

MALICIOUS

PDF

41.4 KB Created: 2020-08-30 10:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9684e7bb00951e79d1281aa89c8f271a SHA-1: 05bf1ce344cee46bed7ee18507759a8c70def23e SHA-256: f597d97998b4763e511260eb94eccbe9c6476e9d3575e1529f6ba5d90e4786b9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files. One of these links, https://ttraff.cc/wix?keyword=definition+of+development+studies+pd, is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure through a link farm, likely for phishing or malware distribution.

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=definition+of+development+studies+pd
    • https://cdn.shopify.com/s/files/1/0433/7719/7221/files/92237121004.pdf
    • https://cdn.shopify.com/s/files/1/0440/1741/8405/files/raspberry_pi_user_guide_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/7831/2355/files/cours_anglais_amricain.pdf
    • https://cdn.shopify.com/s/files/1/0435/6420/4193/files/33046490374.pdf
    • https://static.usrfiles.com/ugd/b8c837_31ae5b9fda44486e9c06b3ae4c9525ad.pdf
    • https://static.usrfiles.com/ugd/9374a7_1e5d6b66ca7542cf82d248560e5f9324.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_eb93aff95155492ebc8b8a7ccb32eef6.pdf
    • https://static.usrfiles.com/ugd/e3325f_190d8a4e2b6f487fa60e491d4dffce17.pdf
    • https://static.usrfiles.com/ugd/3bf302_97197f4ab2244bc784989ad503fcd8d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_de645057731a4d4885797e5ec200911f.pdf
    • https://static.usrfiles.com/ugd/b8c837_a232fd12bd044f6ea1f92d2ac5e7b579.pdf
    • https://static.usrfiles.com/ugd/9f6a24_83669610821c43db9f91279a6c80d573.pdf
    • https://static.usrfiles.com/ugd/a771bd_54cb069c4f2e4bf4a58d68791c53bf3d.pdf
    • https://static.usrfiles.com/ugd/c83fdb_9c22fc8fbfc543daabdce7bbf89934d2.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_off000064fb.bin
d3f4fd8e7d043dac75e7f87b58595d74b1e548fb11a57ef4ccade2ad947cf904		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64FB 4940 bytes
font_01_sfnt_off000075c8.bin
7870b96621a7a3a34afb10f903409c2d549064d6d2ce2e35d53d517f45c0b4a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75C8 10296 bytes

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