Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9d585c80548e216…

MALICIOUS

PDF

34.7 KB Created: 2020-10-09 08:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0169659f887c4acbcc2bdf941c2a7ba SHA-1: 19fe0bb799049a4b97e48803ec794adf43ca4fae SHA-256: a9d585c80548e216889bd441d03803ccc088220c0559789a8cdb19d898b3be69
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to malicious infrastructure, specifically a URL related to a "California association of realtors rental agreement". This suggests a phishing or scam attempt designed to trick users into visiting a harmful site. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://gettraff.ru/strik?keyword=california+association+of+realtors+rental+agreement
    • https://site-1037018.mozfiles.com/files/1037018/76848725984.pdf
    • https://site-1038552.mozfiles.com/files/1038552/parepuvot.pdf
    • https://site-1044103.mozfiles.com/files/1044103/69817409700.pdf
    • https://site-1043606.mozfiles.com/files/1043606/93621485477.pdf
    • https://site-1036909.mozfiles.com/files/1036909/wizijerudavufuvikexab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0494/3049/5399/files/36mm_to_inches_watch.pdf
    • https://cdn.shopify.com/s/files/1/0495/9797/2629/files/earthwise_12_amp_electric_lawn_mower_manual.pdf
    • https://cdn.shopify.com/s/files/1/0481/2354/3715/files/24511764444.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8486/files/87929796305.pdf
    • https://cdn.shopify.com/s/files/1/0435/5470/1463/files/find_the_missing_number_in_the_pattern_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0437/5022/8119/files/bias_of_an_estimator_can_be.pdf
    • https://cdn.shopify.com/s/files/1/0491/6753/2198/files/wilopevak.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/license_plate_agency_elm_street_fayetteville_nc.pdf
    • https://cdn.shopify.com/s/files/1/0439/0515/5224/files/82359904042.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007307.bin
190caac5fc2ba140e1af90bcb137acf933a5e55082a25d53414adfa8bb5678ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x7307 5104 bytes