Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ce6377f72a81cc…

MALICIOUS

PDF

49.9 KB Created: 2020-08-05 09:05:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0530d460e1f3b1d4df4e5a739bdeae88 SHA-1: 508875e043b53662d9a48ba792719e2ff2cd23cd SHA-256: 59ce6377f72a81ccbfc629c88a4cf77fabd77d94286919d46a54faf0720558b3
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a tenancy agreement. The document also hosts a large number of external PDF links, many hosted on Shopify, likely for SEO manipulation to improve search engine ranking for malicious content. The ML classifier strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=assured+shorthold+tenancy+agreement+for+letting+a+residential+dwelling+pdf
    • http://files.daytonheartfulness.org/uploads/1/3/1/4/131411539/e5fb279c0f5735.pdf
    • http://files.balboajerkycompany.com/uploads/1/3/0/7/130775786/rimumi.pdf
    • http://sawusuno.shepherdfamilyfarm.com/uploads/1/3/0/7/130738714/532170.pdf
    • http://files.messianiclaw.com/uploads/1/3/2/8/132815015/826316.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11286786524.pdf
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/prescription_for_nutritional_healing_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/82365171426.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62092070186.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/texuveludodoruxewa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9412/1379/files/30714167215.pdf
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/68315759586.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1073/files/aldehydes_ketones_and_carboxylic_acids.pdf
    • https://cdn.shopify.com/s/files/1/0431/7446/1594/files/atrial_septal_defect_pediatric.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/60707396269.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_off000075b2.bin
b9167866cc2fdc5268f91bc722bc0497277cf9c19f386cf79dfc6b0636761451		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B2 5636 bytes
font_01_sfnt_off000088c3.bin
78760f030de815c99e7dc02394378eb698834240acf6242afed1315f673c0452		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C3 10340 bytes
font_02_sfnt_off0000ac1d.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC1D 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.