Malicious PDF — malware analysis report

Static analysis result for SHA-256 944e110b237372ac…

MALICIOUS

PDF

41.1 KB Created: 2020-08-14 02:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1fefef3364a17e36dead4ccc0634463 SHA-1: 30cd87c8ef18430f3dc07ee14777666323ead082 SHA-256: 944e110b237372ac3368063008f82683b1ccd1440cb6118664d8f5e12afc593a
150 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to ttraff.ru. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests a large number of outbound links were generated, likely for SEO manipulation or to obscure the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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.ru/wb?keyword=facebook%20developer%20guide%20pdf
    • http://files.emilycavanaghauthor.com/uploads/1/3/2/6/132680808/6793363.pdf
    • http://files.marriedmeakiwi.com/uploads/1/3/0/8/130874119/fetupetiloxubov.pdf
    • http://files.netherwoodtennisclub.org/uploads/1/3/0/8/130814666/b102f7.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/base64_string_to_jquery.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.pdf
    • https://cdn.shopify.com/s/files/1/0433/3630/2750/files/radius_diameter_circumference_and_area_of_a_circle_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6307/files/93790827690.pdf
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/34497366886.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/zerenataxanewane.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/80298685803.pdf
    • https://cdn.shopify.com/s/files/1/0443/8137/2582/files/22376035993.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8448/files/fewapilaverexos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21617342462.pdf
    • https://cdn.shopify.com/s/files/1/0436/0624/5539/files/84381464882.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/56046314976.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_off00005f7c.bin
c4bcf5670e1c47d11b23f943dcd732aa0133951705cb3e2878eeaf96f1769ace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7C 5364 bytes
font_01_sfnt_off000071cc.bin
6ca5d7f903c41aec87e004d9bafad1ac308ac10e0881ea047dd5280968dfd47d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71CC 10592 bytes

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