Malicious PDF — malware analysis report

Static analysis result for SHA-256 99fe321b72ca2574…

MALICIOUS

PDF

33.7 KB Created: 2020-08-13 01:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7812561148ec423a9a23e9ac8424630d SHA-1: 0e8a04691011ef746760545a14191d927d417bb7 SHA-256: 99fe321b72ca2574b2c78fa9f20d6e87b4347788dd693a7d260e4763c811ee5c
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, 'https://ttraff.ru/pify?keyword=shaw+commercial+carpet+maintenance+pdf', is identified as a malicious redirector. This suggests the document's purpose is to redirect users to malicious sites, likely for phishing or malware distribution. The document body itself is heavily obfuscated and contains embedded URLs, further supporting the malicious intent.

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=shaw+commercial+carpet+maintenance+pdf
    • http://files.floridatennismagazine.com/uploads/1/3/0/7/130738636/fakuxoxomaxiwet.pdf
    • http://files.olgasplaces.com/uploads/1/3/0/8/130814110/zuripusuwekiwu_lazipusuxofesu_xaxepowebu.pdf
    • http://juxafi.middleburyactors.com/uploads/1/3/2/7/132710621/8759360.pdf
    • http://boribudod.bellaswyoming.com/uploads/1/3/2/6/132681579/4684309.pdf
    • http://files.tecumsehwoods.com/uploads/1/3/0/8/130813837/meluwuleva.pdf
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/aitsl_professional_standards.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/dolezudaruluw.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/8352236667.pdf
    • https://cdn.shopify.com/s/files/1/0433/8375/0814/files/78099274120.pdf
    • https://cdn.shopify.com/s/files/1/0432/8131/8056/files/adobe_reader_old_version_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/4106/8958/files/mcmlxxii_roman_numerals.pdf
    • https://cdn.shopify.com/s/files/1/0440/7492/6230/files/cahier_de_vacances_cp_ce1.pdf
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/final_cut_pro_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.pdf
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/suwerupijid.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/gojarunodabilamu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/vogazexena.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5460/files/34477324618.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_off00004722.bin
094f53c56b5c370972c06464c3cb1021d2e3a20103dd8d6207ecddcc15ee8c11
pdf-font-stream PDF embedded font (sfnt) at offset 0x4722 5412 bytes
font_01_sfnt_off0000596a.bin
329257f999a1970c293aa5c45d2739834964d122334d5db923b18525dcd28625
pdf-font-stream PDF embedded font (sfnt) at offset 0x596A 9488 bytes