Malicious PDF — malware analysis report

Static analysis result for SHA-256 3690a86226cdb37c…

MALICIOUS

PDF

42.3 KB Created: 2020-08-24 13:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0ddc3e42da7592b62b417aae5486740 SHA-1: cb8783afd98d3e25d30fbe72325e1d8989535e02 SHA-256: 3690a86226cdb37c084c89fa827bff4908f1b5d587ae007fe71eecac6892b14c
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure for 'Arthur movie 2011 free'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The PDF also exhibits characteristics of a link farm, with many embedded links pointing to Shopify domains, likely for SEO manipulation.

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=arthur+movie+2011+free
    • http://files.groennfell.com/uploads/1/3/1/4/131438541/rizeki.pdf
    • http://files.ctlcv.org/uploads/1/3/0/8/130873855/givij.pdf
    • http://nifudolap.bncnyc.com/uploads/1/3/1/4/131437549/fotebavaroworu-satijetuw.pdf
    • http://josukev.flowyogagalway.com/uploads/1/3/0/8/130874493/801924.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5013/files/19751822860.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/40279257554.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/tuwusurawerolupexanu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7932/7137/files/61209280919.pdf
    • https://cdn.shopify.com/s/files/1/0436/5352/9753/files/the_avengers_logo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7745/2454/files/binary_vector_system_for_plant_transformation.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2582/files/94532542208.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/uptet_math_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/linak_la36_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/3951/4006/files/latest_bollywood_moive_free_ofilmywap._com.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sujaxitedidubabupopivup.pdf
    • https://cdn.shopify.com/s/files/1/0436/3390/1726/files/41486204750.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39806276645.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_off00006490.bin
471eb6583582c254cccd2ff1defaa62944c750f24c283a95be541ff3109ae7d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6490 4964 bytes
font_01_sfnt_off00007565.bin
06f5c83327536abface69f54bf59f9e60423409ec2662c8a24317f64abd99552
pdf-font-stream PDF embedded font (sfnt) at offset 0x7565 11864 bytes