Malicious PDF — malware analysis report

Static analysis result for SHA-256 4317be999bc0030c…

MALICIOUS

PDF

37.5 KB Created: 2020-08-28 00:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 481064619a2bf7f07a5e3d8df4336890 SHA-1: 4a08ec3f8c1d59561bcf00908944281b2a1a4c35 SHA-256: 4317be999bc0030c61b4fac523522bc245ddb4c1ae22d335f6580d87133983a2
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the embedded URLs, https://ttraff.ru/pify?keyword=mother%2527s+day+worksheets+for+kindergarten, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF files, suggesting a lure to download further malicious content. 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.ru/pify?keyword=mother%2527s+day+worksheets+for+kindergarten
    • http://dupabik.shelleyartwork.com/uploads/1/3/0/8/130814328/667de24.pdf
    • http://files.hhupholstery.com/uploads/1/3/0/8/130813427/gufuxep-lokopojeku-nosomosome.pdf
    • http://files.pickertfamilyfarm.com/uploads/1/3/1/3/131398187/gipukidulevezet.pdf
    • http://xabob.antoniacundy.com/uploads/1/3/2/6/132695219/zemimonofeba.pdf
    • https://cdn.shopify.com/s/files/1/0436/6820/9814/files/africa_geographical_map.pdf
    • https://cdn.shopify.com/s/files/1/0440/6152/4118/files/39399252342.pdf
    • https://cdn.shopify.com/s/files/1/0448/9995/8939/files/vb._net_string_encoding.pdf
    • https://cdn.shopify.com/s/files/1/0430/1189/9545/files/4191583428.pdf
    • https://cdn.shopify.com/s/files/1/0465/0362/4856/files/82991628091.pdf
    • https://cdn.shopify.com/s/files/1/0432/2033/6802/files/50494955453.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/sezigudu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1943/6195/files/15556064722.pdf
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/pozuje.pdf
    • https://cdn.shopify.com/s/files/1/0431/0374/8260/files/puzafufapoxegu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9219/files/99514147282.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/53877189249.pdf
    • https://cdn.shopify.com/s/files/1/0433/9430/2117/files/kingdom_come_find_father_simon.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_off00004973.bin
93352b03aefecd03c7bcff11d5df4315ea592cf0fbaec4550d6a11523e36ec9b
pdf-font-stream PDF embedded font (sfnt) at offset 0x4973 5220 bytes
font_01_sfnt_off00005b56.bin
13d6b52bfc8a8609a7b3e04283f36cd2583b9826c57ad2a125e4a51c001baaf9
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B56 9220 bytes
font_02_sfnt_off00007ae5.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE5 4324 bytes