Malicious PDF — malware analysis report

Static analysis result for SHA-256 975ba95cb1ea8c77…

MALICIOUS

PDF

40.2 KB Created: 2020-08-01 10:18:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61d920df5f03bdbe1dc55471620e332b SHA-1: f9bdc39ec312fcfc11dd7b56da1d45b62d3b41a3 SHA-256: 975ba95cb1ea8c774c68574a49ea301e8939d893cace11bd508a3791836d38d0
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, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=john+deere+135', is flagged as a malicious redirector. The document body contains garbled text but also includes the suspicious URL, suggesting the document's purpose is to redirect users to malicious infrastructure through these numerous links.

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=john+deere+135
    • http://files.safgeorgia.com/uploads/1/3/1/6/131606165/kowapudefafi-dagido.pdf
    • http://files.carnelianpropertymanagement.com.au/uploads/1/3/0/8/130874295/rogubinit-jigufosowo-vofegezeviso-kujuwuxaki.pdf
    • http://files.sitiaoceanides.com/uploads/1/3/2/6/132682639/664cb0ff5d.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/54675802342.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1045/files/winife.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/teporadejigavo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/xagoferelero.pdf
    • https://cdn.shopify.com/s/files/1/0434/4755/0119/files/ithaca_m_49.pdf
    • https://cdn.shopify.com/s/files/1/0428/1987/9068/files/10002208126.pdf
    • https://cdn.shopify.com/s/files/1/0433/4626/4213/files/xupefalas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/lafikuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/mikamizoduwu.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_off00006187.bin
6931ad8b34f13df66f8ec9eed5826fa242565430f2155c4653fde701d8d9c845		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6187 4824 bytes
font_01_sfnt_off000071f2.bin
058589bbc2ae412107a6139f92be0b056f993026f786ef99869ec0b8fab6b4ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F2 10236 bytes

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