Malicious PDF — malware analysis report

Static analysis result for SHA-256 28fd4cd7c446749b…

MALICIOUS

PDF

46.8 KB Created: 2020-09-21 00:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66c1f3874dcaef7bcd773b3266041f48 SHA-1: 5edaa278a4317baa01d017a4f2e0c136b8979a90 SHA-256: 28fd4cd7c446749bfc8cf3046fa36d2d8e23a4719d59cda5c167bde465b11cac
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.me/wix?keyword=conan+exiles+parents+guide'. Additionally, it features a large number of embedded links, many hosted on shopify.com, suggesting a link farm or SEO manipulation tactic to disguise malicious intent. The document body, though heavily obfuscated, contains the suspicious URL, reinforcing the lure.

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.me/wix?keyword=conan+exiles+parents+guide
    • http://rekuxa.yourchiropracticoffice.com/uploads/1/3/1/3/131379844/8798904.pdf
    • http://xipoxen.eastcentralcasa.com/uploads/1/3/1/1/131163717/4417194.pdf
    • http://majikoko.adamolsenphoto.com/uploads/1/3/0/8/130815031/wuwalemanosa.pdf
    • http://lewejelu.jeanluceartist.com/uploads/1/3/1/6/131606228/1490727.pdf
    • https://cdn.shopify.com/s/files/1/0461/9419/6643/files/christian_brothers_songs.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/builders_profile.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7313/files/66627700436.pdf
    • https://cdn.shopify.com/s/files/1/0482/5455/0170/files/algebra_1_cumulative_test_2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0458/6271/5545/files/tojunixoravigikigikefam.pdf
    • https://e267e169-0d28-4f8d-9760-15c59d0e7a2f.filesusr.com/ugd/4c3d6a_eb556ed8c98949e3a7d6b5038866bf61.pdf?index=true
    • https://1d3a4882-ab1c-46bb-b4f7-0435056e73c3.filesusr.com/ugd/cb4a18_ebb21eba3a944e778c4a2e5058da2f77.pdf?index=true
    • https://7f93cb60-e7d5-4f01-aba7-c06af24277f3.filesusr.com/ugd/1ee69b_072dae78019b4a448ad3f6d6d60e5273.pdf?index=true
    • https://9e1038da-d4e3-44b8-8673-5f6f8a868681.filesusr.com/ugd/ec0012_8cf09d1cae8347c8a3777e5dfb577662.pdf?index=true
    • https://654fcd4b-a393-4c58-8272-42213b98157a.filesusr.com/ugd/d55797_24398778802a40d5b97ed7b28b855906.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/10758599533.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/32216621850.pdf
    • https://cdn.shopify.com/s/files/1/0431/1908/3677/files/65677414798.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_off00007924.bin
f58fa37c9acc44d121b46128b21fa4e07c54cca85a7ab76e55ca616a5b4871e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7924 5100 bytes
font_01_sfnt_off00008a8a.bin
cdb20dde19794bfbb710b4dfa7516f1351be123df260f2cdb0902caf4f24d849
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8A 10476 bytes