Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d6bffe621d5045…

MALICIOUS

PDF

43.7 KB Created: 2020-08-31 15:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fec3b6787af1424e9b2785e3645e5d82 SHA-1: 3cbffba6a86052ab6bd152616f81cc55b238caab SHA-256: c3d6bffe621d504589c2ca1dd0beebf152688d9efb439b52cd29a1fce9b63f35
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 hosted on Shopify and other domains. One of the primary links, https://ttraff.ru/pify?keyword=bodensee+radweg+karte+pdf, is identified 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.ru/pify?keyword=bodensee+radweg+karte+pdf
    • https://cdn.shopify.com/s/files/1/0460/7603/5236/files/nfl_injuries_report_today.pdf
    • https://cdn.shopify.com/s/files/1/0436/2502/1603/files/this_is_where_i_leave_you_netflix.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/bs_player_free_for_macbook_air.pdf
    • https://static.usrfiles.com/ugd/8d57bd_ea284677568c4f5d98cf7e244f099a48.pdf
    • https://static.usrfiles.com/ugd/c20ea7_38acc1a962b747e283761663fd9b6093.pdf
    • https://static.usrfiles.com/ugd/a640e9_fc91848868914be2bc1ef2ff8328d6ba.pdf
    • https://static.usrfiles.com/ugd/0df15e_10cbe2cd952f47059be914662c2be0aa.pdf
    • https://static.usrfiles.com/ugd/704566_5a79e1e31a194c7fbc787387ce3bef5f.pdf
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/vodobaxekowus.pdf
    • https://cdn.shopify.com/s/files/1/0457/5510/5436/files/73140529641.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/cookie_clicker_editor.pdf
    • https://static.usrfiles.com/ugd/b8c837_47b202d7a54d49bcb8fff20e4828ace3.pdf
    • https://static.usrfiles.com/ugd/e8506d_d024783dcbf94de5ae3410a4fe7fdfc3.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc4049ef1ab34d79861aee3141adf6b0.pdf
    • https://static.usrfiles.com/ugd/df4650_58d72c8f9712460ea15667fcd7d3988f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e05996274a114557ba240fe8438ab133.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_off00006b0d.bin
6bdfc59bf4939d43ba5b800d7b6fc3ecde750c9b20966aa44f7023759ea4af74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0D 5380 bytes
font_01_sfnt_off00007d87.bin
f13a43e60e897b380ceef13b06b6ff00baee015d1d92c7f7fb6ee74c881dc2b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D87 11032 bytes

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