Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fba55a1c8bd45cd…

MALICIOUS

PDF

64.9 KB Created: 2020-08-10 14:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ee9fe5fea4fca0812e2b31c32e9cdc0 SHA-1: 7123c81cb8d02eb3faab47d019797ab37ea89216 SHA-256: 9fba55a1c8bd45cdc82acbde1545877f4445f5e6e9d527109ff0b8d91ea4fa20
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, directing users to `https://ttraff.cc/pify?keyword=alopecia+types+pdf`. It also contains a PDF link farm heuristic, with numerous links pointing to PDF files hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF URL, suggesting a lure to trick users into clicking the malicious link. 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/pify?keyword=alopecia+types+pdf
    • http://files.quantumpoint.org/uploads/1/3/0/8/130874031/fexurugomaseba_livorejalolokib_kuluvewowa.pdf
    • http://bitemuba.jesspurtellyoga.com/uploads/1/3/1/3/131380183/kugapipegine.pdf
    • http://wanixud.strathendrickrc.co.uk/uploads/1/3/1/3/131380042/weleg.pdf
    • http://sesupow.runnerstoke.com/uploads/1/3/0/9/130969352/1925629.pdf
    • http://files.foxoildrilling.com/uploads/1/3/1/3/131398560/ab2a0.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nezax.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/38020448529.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4423/files/pusufopasunonavilil.pdf
    • https://cdn.shopify.com/s/files/1/0428/4570/0262/files/verizon_inhome_agent.pdf
    • https://cdn.shopify.com/s/files/1/0439/2511/0952/files/ataxia_telangiectasia_review.pdf
    • https://cdn.shopify.com/s/files/1/0428/4055/5676/files/animal_bikes_mod_1._7._10.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9887/files/65840466657.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/wojow.pdf
    • https://cdn.shopify.com/s/files/1/0437/7644/2519/files/fepulo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/84512078302.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/wokexuzunulet.pdf
    • https://cdn.shopify.com/s/files/1/0433/1143/1838/files/custom_pokemon_trainer_sprites.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66656561998.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.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_off0000baab.bin
bb02629133af078a39d0c8ddfa27476585cce298e7dde083b5ee4f92dc3d1c63
pdf-font-stream PDF embedded font (sfnt) at offset 0xBAAB 5144 bytes
font_01_sfnt_off0000cc46.bin
0543f32a8007280e8471be0f8dc646bcb29c45277c544b8a2423a378288a8635
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC46 12388 bytes