Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5b7b74017007935…

MALICIOUS

PDF

36.2 KB Created: 2020-08-16 11:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d4e706a9ed63acc468cec9cb84e7340 SHA-1: d240a1b170d61efd204917b1a74ee14e3aa925a2 SHA-256: f5b7b74017007935419860b439a563b88ecde4db7cec50f0dfff112695982656
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=love+her+wild+poems+atticus+pdf'. Additionally, it exhibits characteristics of a link farm, embedding numerous external PDF links, with 'https://cdn.shopify.com/s/files/1/0434/2281/0263/files/dopikajidizo.pdf' being the first identified. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting it's intended to be presented to the user.

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=love+her+wild+poems+atticus+pdf
    • http://files.mysuperiorautogroup.com/uploads/1/3/1/3/131383342/tufemiximokolawumero.pdf
    • http://files.2as.ency-education.com/uploads/1/3/1/1/131164557/kigubemevamofe.pdf
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/dopikajidizo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/lodajesijafemikiwijebun.pdf
    • https://cdn.shopify.com/s/files/1/0428/0641/1431/files/gekevusiluwibiw.pdf
    • https://cdn.shopify.com/s/files/1/0440/6122/9206/files/76322504669.pdf
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/nhl_media_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/62229317014.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ralaguguzovepusumizus.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/48639033796.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/33419810873.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/metunixunebaredoruderuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/1456/9632/files/masemabivemagazuseromex.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_off00004e0c.bin
471f9fa011ccd7c43aa715d3adc9a9ed87f1e64a62a672c675d69804bd2c37f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E0C 5488 bytes
font_01_sfnt_off000060ab.bin
8ad4c8bc26980c45b020e0573a880f0c43b902e30fc8ed055ca54f267e0dfdb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60AB 10484 bytes

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