Malicious PDF — malware analysis report

Static analysis result for SHA-256 247c2bf1d3622791…

MALICIOUS

PDF

50.2 KB Created: 2020-08-13 15:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f2c4457245b2b862f8f5f326d09b4b7 SHA-1: 11c8d38cdcdba1fb875e0cf60a9d8dd8a26850c3 SHA-256: 247c2bf1d362279187795f08e51759d3240a8d7669a5480dae294c09f93c4be4
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 document downloads, but the primary link redirects to a known malicious redirector. This suggests a phishing or malware distribution attempt. The embedded URLs, particularly the one pointing to 'ttraff.com', are indicative of a lure to a malicious site. The document body itself is heavily obfuscated and contains numerous URLs, reinforcing the link farm heuristic.

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.com/pify?keyword=antenna+and+wave+propagation+by+kd+prasad+pdf
    • http://files.ogrowneyns.ie/uploads/1/3/2/6/132695813/kobetowop.pdf
    • http://files.erocmusic.com/uploads/1/3/1/4/131453252/578cc6d2d460135.pdf
    • http://files.mycorbintoncommons.com/uploads/1/3/0/8/130813829/f4ffe2c60f8.pdf
    • http://files.thecampuspathfinder.com/uploads/1/3/1/4/131453944/99623748.pdf
    • http://files.sensualtigerholisticarts.com/uploads/1/3/1/4/131452958/ririxigev_jarixuderisoluv.pdf
    • https://cdn.shopify.com/s/files/1/0430/6737/5770/files/daxurabafatix.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/nebizusuz.pdf
    • https://cdn.shopify.com/s/files/1/0438/4869/5958/files/tepejosepofizugif.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2138/files/gugel.pdf
    • https://cdn.shopify.com/s/files/1/0452/2465/7056/files/glencoe_mcgraw_hill_algebra_2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/41198477285.pdf
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/61147422728.pdf
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/junowubuvik.pdf
    • https://cdn.shopify.com/s/files/1/0428/8485/8022/files/waiting_for_godot_quotes.pdf
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/puzedu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/igcse_chemistry_formula_sheet.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_off00007614.bin
6383d51e1758068665a52ba25207de1c4071df813dbd02c18b36d7826e4d1225
pdf-font-stream PDF embedded font (sfnt) at offset 0x7614 5624 bytes
font_01_sfnt_off0000895d.bin
33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x895D 2116 bytes
font_02_sfnt_off00009327.bin
d9855695bbe280fa6bd5127b2cc93c22e28e69c3db22828d54e50a6c64638122
pdf-font-stream PDF embedded font (sfnt) at offset 0x9327 11232 bytes