Malicious PDF — malware analysis report

Static analysis result for SHA-256 563f4b0fbd209533…

MALICIOUS

PDF

46.4 KB Created: 2020-08-22 10:06:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e3fbab11d25f00f156e563f5d154fa2 SHA-1: 8b4d9d8ac99da2c6f5b633b51ac1c1eb2a86bb29 SHA-256: 563f4b0fbd209533a32c42fc1970de9fc470371e82ea56462f4ba2449180fcdd
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a known malicious redirector. The document body, though partially corrupted, includes the same title as the malicious URL, suggesting a lure. The primary attack pattern involves redirecting users to malicious infrastructure through a link farm. No scripts were extracted, limiting the analysis of further stages.

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.ru/pify?keyword=br%25C3%25BCtten+nete+maa%25C5%259F+hesaplama+form%25C3%25BCl%25C3%25BC+2017+excel
    • http://zalubawu.notwithouthopeproject.com/uploads/1/3/0/7/130739718/rarutajel-vilufavudosa-novisumijesujex.pdf
    • http://files.loveadelyn.com/uploads/1/3/0/8/130874066/c00819a.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/62829712415.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3475/files/82305086226.pdf
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/yamnuska_trail_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/pop_up_blocker_firefox.pdf
    • https://cdn.shopify.com/s/files/1/0447/4988/1495/files/durujisaromexopudujas.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8459/files/livro_sobre_o_behaviorismo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/fanujodimegesi.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_off00005d38.bin
bd85060dce9c0fc9b1bc673d9b4d8c6c39b134526b1a53c72fc6e64fc5ae05fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D38 6148 bytes
font_01_sfnt_off00007159.bin
a62b6cb963c62b2df15bd54d0732e7ae205d0562508d50107f6734d59736f195		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7159 11304 bytes
font_02_sfnt_off00009585.bin
37e7e7e9114bd13ff8332e6897528b8343bfbb4b2dd84d96d31ee0d9080a0a97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9585 16096 bytes

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