Malicious PDF — malware analysis report

Static analysis result for SHA-256 da825bd0d0f688d2…

MALICIOUS

PDF

44.2 KB Created: 2020-08-06 07:36:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a14a38db82683888ab2d2513ffde1a4 SHA-1: af800b4d4b32bfc734c38704a69991b3c33cd62d SHA-256: da825bd0d0f688d2db3191fd141be52920111fc1dd6e725e90941b626c5cae55
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=muscles+of+foot+pdf'. This indicates an attempt to lure the user to a malicious site. The document also contains a mass external PDF link farm, with many links hosted on cdn.shopify.com, suggesting a SEO-based distribution tactic. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of a phishing or redirection attack.

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=muscles+of+foot+pdf
    • http://mivisu.thebeaverindustries.com/uploads/1/3/1/4/131409309/miwimiduxo.pdf
    • http://milovexox.reformation.kaisons.org/uploads/1/3/1/4/131407406/6243104.pdf
    • http://files.mevideography.com/uploads/1/3/1/1/131163834/8128268.pdf
    • http://files.dgdriver.com/uploads/1/3/0/7/130775506/noniredik-bapuvik-monilabid.pdf
    • https://cdn.shopify.com/s/files/1/0437/0923/5353/files/luxosikejexewexako.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/list_of_industries.pdf
    • https://cdn.shopify.com/s/files/1/0432/1558/5448/files/pigiwatupafiwodevufaxojeb.pdf
    • https://cdn.shopify.com/s/files/1/0436/3599/8880/files/77260636141.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/rufupuxonuleguk.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/96713259840.pdf
    • https://cdn.shopify.com/s/files/1/0431/0656/6306/files/920257264.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vawis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/kinoni_windows_server.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/40986290699.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_off0000635e.bin
1efabce0e18ad4d4d976cb7f8eebafc4f9368fca4588c7b7dea3d3dc9f9fb177		 pdf-font-stream PDF embedded font (sfnt) at offset 0x635E 4576 bytes
font_01_sfnt_off00007309.bin
cfb25e24a8df75349ec9b01b9a49cf2223478001cbaa26995ad07359714067fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7309 10352 bytes
font_02_sfnt_off00009658.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9658 4324 bytes

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