Malicious PDF — malware analysis report

Static analysis result for SHA-256 4efc197c444cba7a…

MALICIOUS

PDF

45.4 KB Created: 2020-08-22 22:11:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 422075f1bedbd2ac779e7bdb1a5cfe63 SHA-1: e7c3981fd105f1120ac555f48c81f0d5b7057b62 SHA-256: 4efc197c444cba7a88aa5f77899211e15df3c9ce49b3d4a503bd1f5f62867fb0
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate documents, but one of the primary links, 'sample diploma template', redirects to malicious infrastructure at 'ttraff.cc'. This suggests a social engineering lure to drive traffic to a potentially malicious site. The PDF structure and embedded links indicate a phishing or scam attempt.

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/pify?keyword=sample+diploma+template
    • http://files.bakingandbooks.net/uploads/1/3/1/4/131406369/koled.pdf
    • http://buwokuwu.fieldsofbeing.com/uploads/1/3/1/6/131606758/jiwapow_zezaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/arqueologia_del_saber_michel_foucault_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0438/6832/4005/files/bsc_syllabus_1st_year.pdf
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/printable_color_periodic_table.pdf
    • https://cdn.shopify.com/s/files/1/0438/8998/3640/files/mysql_my_cnf_example.pdf
    • https://cdn.shopify.com/s/files/1/0451/7930/6135/files/kindred_jungling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/3426/3199/files/bopix.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/47035103232.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/nuxedezipafaxijuzukusa.pdf
    • https://cdn.shopify.com/s/files/1/0438/3840/6806/files/panavigarononu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6262/3394/files/dubogikaderuv.pdf
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/xelapibawujuvakorivanafew.pdf
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/kusawifaki.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_off00007659.bin
2e8290c9616fd49a80d86edca0ce2970914612321fe46c728a5b807aba2bdb84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7659 4932 bytes
font_01_sfnt_off00008707.bin
718d7bd8fdcdee9c9a1af5eef36025428801952d805b04caa335ddfaccda019a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8707 9848 bytes

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