Malicious PDF — malware analysis report

Static analysis result for SHA-256 f38b9914736f2918…

MALICIOUS

PDF

39.7 KB Created: 2020-08-08 16:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e59a2c347f5aa57b5a7551b40a3b46e SHA-1: fb81ee28ef94cbb79efc3cbda0e204e7eb1dac98 SHA-256: f38b9914736f2918b0cef3a2e6919d75834428b6969cb69a47a6b810a1204bcc
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as a document about "Zoho aptitude questions 2020 pdf". The PDF also contains a large number of links to other PDFs hosted on Shopify, likely for SEO poisoning or link farming. No scripts were extracted, but the presence of a malicious redirector and the document body's deceptive content strongly suggest a phishing or social engineering attack.

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=zoho+aptitude+questions+2020+pdf
    • http://files.hawkinsfarmmarket.com/uploads/1/3/0/7/130739443/1242848.pdf
    • http://files.buchanans-store.com/uploads/1/3/1/1/131163643/263bb6a4cc3c1c.pdf
    • http://files.pernsfood.com/uploads/1/3/1/8/131856333/tuwila-getazibipafat-luzuwapopu-javikawijegoj.pdf
    • http://fowaj.mariposacelebrations-eventmanagement.com/uploads/1/3/1/4/131483083/fepera.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/mojamamam.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/mimawafavujurefotaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/xuduragagurazolokunoso.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/55494271566.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/kutuwokusejikikusewepu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdf
    • https://cdn.shopify.com/s/files/1/0437/7749/1093/files/69805623087.pdf
    • https://cdn.shopify.com/s/files/1/0434/3241/1298/files/6595911393.pdf
    • https://cdn.shopify.com/s/files/1/0437/0658/1147/files/trim_string_c.pdf
    • https://cdn.shopify.com/s/files/1/0439/5037/5070/files/car_inspection_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/7059/3955/files/77451802843.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/wugudusapawexixabud.pdf
    • https://cdn.shopify.com/s/files/1/0440/5064/5157/files/business_analyst_case_study_examples.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_off00005d92.bin
8c69fab973fc0dac66d524cee5e4db03fc2995bf7cefbbebde219a6277cdcb66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D92 5356 bytes
font_01_sfnt_off00006fcd.bin
7bffdb58e95f1c7a4bf59258fa20263b0d279f58f59d25339e3c1112c1ac2719		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCD 9908 bytes

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