Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72709b9e721085a…

MALICIOUS

PDF

39.2 KB Created: 2020-08-12 18:39:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c02de7b62a39e148b7ec4a6a77650f4 SHA-1: 28047fbf58159cf12949b090136f264bba414afa SHA-256: e72709b9e721085ac2d004d9c426be3f37951dc01bbbccea8e3dea283e1b3093
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a mass of external links, many of which are hosted on Shopify, likely as part of an SEO link farm. One critical heuristic identified a link to a known malicious redirector infrastructure, disguised as 'wiper motor specifications pdf'. This suggests the document's primary purpose is to redirect users to malicious sites. 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.cc/wb?keyword=wiper%20motor%20specifications%20pdf
    • http://files.phelpsmuseum.com/uploads/1/3/1/6/131637773/1926303.pdf
    • http://files.peltperformance.com/uploads/1/3/0/9/130969082/7769419.pdf
    • http://files.yucalis.com/uploads/1/3/0/9/130969971/bojonotumes.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/zepuxakidumanadu.pdf
    • https://cdn.shopify.com/s/files/1/0440/7921/8840/files/gimasubazuxivojunek.pdf
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/easy_classical_piano_songs_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/7160/1817/files/zizitulelek.pdf
    • https://cdn.shopify.com/s/files/1/0432/4071/8496/files/30626868992.pdf
    • https://cdn.shopify.com/s/files/1/0434/8130/1158/files/12378513521.pdf
    • https://cdn.shopify.com/s/files/1/0440/7263/2470/files/dymo_labelwriter_450_turbo_driver_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0437/8309/4434/files/67622504084.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4435/files/woresimuvitiridizibil.pdf
    • https://cdn.shopify.com/s/files/1/0433/1424/9886/files/3981361302.pdf
    • https://cdn.shopify.com/s/files/1/0436/6372/0613/files/boucheron_logo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/zidekiwazijilikumob.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/62141545401.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_off00005cf4.bin
147cbb31a9f0d85ffa0a2b659467d8a25fb088d909214e01bd5bfafc97a8790e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF4 5284 bytes
font_01_sfnt_off00006eda.bin
8435c37be62d215a40a0769c7005cff0a49a03d9f77de68852ca88cca7b43515		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDA 9700 bytes

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