Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a46c16b12812231…

MALICIOUS

PDF

41.1 KB Created: 2020-08-19 10:26:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 016f6211496ff9b821adeb5c95b0776e SHA-1: 9cf116502a3db3c5e4fc33efdd77eaa8c92f9eee SHA-256: 1a46c16b12812231554f12906d0dcfb64137a5458ec26acf1cc915fbac16b040
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=adidas+mens+t+shirt+size+guide'. This URL is designed to redirect users to malicious content. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. 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.cc/pify?keyword=adidas+mens+t+shirt+size+guide
    • http://ketodo.thecornerstonelodge.org/uploads/1/3/1/3/131398134/6ea5599.pdf
    • http://files.runnxc.com/uploads/1/3/2/3/132302802/1561035.pdf
    • http://files.mooserange.com/uploads/1/3/2/6/132681295/koloval.pdf
    • http://files.zummoscafescranton.com/uploads/1/3/0/7/130739480/jivoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4628/files/amtmandens_dtre.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1223/files/it-_ebooks._info.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/25090568261.pdf
    • https://cdn.shopify.com/s/files/1/0435/5316/1367/files/leatherworking_wow_classic_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/artritis_cronica_degenerativa.pdf
    • https://cdn.shopify.com/s/files/1/0437/8250/4600/files/21141849626.pdf
    • https://cdn.shopify.com/s/files/1/0432/0247/8237/files/plural_of_irregular_nouns.pdf
    • https://cdn.shopify.com/s/files/1/0449/0631/5931/files/contrato_consorcio_bradesco_automovel.pdf
    • https://cdn.shopify.com/s/files/1/0429/9037/0975/files/84829972914.pdf
    • https://cdn.shopify.com/s/files/1/0432/8371/0108/files/amoxicilina_bd_bula.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/malayalam_movies_free_sites.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/zevewokerobufonem.pdf
    • https://cdn.shopify.com/s/files/1/0439/9484/1246/files/47384593102.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_off00005bdf.bin
64da5a395ca4291ef88ee74d1d8c0da5e9e2feeddcd0125bdc82ee42bc05f4e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDF 5248 bytes
font_01_sfnt_off00006d88.bin
71e599aa8a7a19822793a0d4301f606ce6b36c6fdd4a496c8318eeeaaef50e8b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D88 13352 bytes