Malicious PDF — malware analysis report

Static analysis result for SHA-256 79cdbf82501ed47f…

MALICIOUS

PDF

46.0 KB Created: 2020-08-04 21:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a43cd02256281da398a2c335eb7e5fb SHA-1: 74c786575bf745c498b6192853fb2183db658ed6 SHA-256: 79cdbf82501ed47fe1b4ffac507aef2325ec49a96059db6403aa6d2b538e730a
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the string 'Ansys workbench 18 pdf', suggesting a lure to download potentially malicious content. The presence of numerous Shopify-hosted PDF links indicates a link farm strategy, likely to improve search engine ranking for malicious content.

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/pify?keyword=ansys+workbench+18+pdf
    • http://guguvuj.mathwithmichellemallahi.com/uploads/1/3/1/4/131438216/938773.pdf
    • http://files.rentfloridahomes.com/uploads/1/3/1/4/131406288/8effca08.pdf
    • http://files.mariebyrdsproul.com/uploads/1/3/0/8/130874598/6292840.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/wofusekenelegebibilebo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6245/9544/files/19129980887.pdf
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/deontology_vs_teleology.pdf
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/setimogizog.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/35582356547.pdf
    • https://cdn.shopify.com/s/files/1/0428/9986/5756/files/63723341352.pdf
    • https://cdn.shopify.com/s/files/1/0429/7955/7539/files/vofatifapetagume.pdf
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/gasutifakukineviwuvade.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6532/files/rutarowes.pdf
    • https://cdn.shopify.com/s/files/1/0434/4479/7606/files/pituxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/togodaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/17544821456.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_off000074ac.bin
fc4cb94ad6bc391b7753990e2a3d35d316a2ff12f0edda404e4b782dad356098		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74AC 5632 bytes
font_01_sfnt_off000087fa.bin
f26ebbbe65b327e70d2eac1eabb49ebcb0a4a33e59f31cbcc8355e6f53daf01a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87FA 10404 bytes

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