Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b1f1de8bf6ea721…

MALICIOUS

PDF

86.3 KB Created: 2020-08-20 19:02:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48b9c3fce2ed938b02f862231a568ad4 SHA-1: c8b3a482378be25de0400eb86f59773652e180dd SHA-256: 2b1f1de8bf6ea721963c039af489520c8c7b9794db25ae6ea4fc3e749ec33606
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the lure. This URL redirects to a malicious domain, suggesting a phishing or malware distribution attempt. No scripts were extracted from this sample.

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=embryology+questions+and+answers+pdf
    • http://files.multiscalar.de/uploads/1/3/0/7/130738812/c714497f.pdf
    • http://files.purchasetheroi.com/uploads/1/3/1/0/131070713/fimidezevitumituw.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9663/files/98891703815.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/84480584492.pdf
    • https://cdn.shopify.com/s/files/1/0435/1416/7450/files/office_for_mac_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/62416883852.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/sajuxoxesanoxazademu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.pdf
    • https://cdn.shopify.com/s/files/1/0433/4069/3662/files/47451941146.pdf
    • https://cdn.shopify.com/s/files/1/0436/0637/6611/files/bluestax_shut_off_ads.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8917/files/76868791419.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/bovivoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/6059/1776/files/lagokikodiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/case_study_abstract_sample.pdf
    • https://cdn.shopify.com/s/files/1/0450/7552/9891/files/losog.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/gunujoxona.pdf
    • https://cdn.shopify.com/s/files/1/0433/6769/4490/files/40804386534.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_off00011221.bin
a0b35236aeb1ee08b2075392e7ff9b5727f6f2e251db5ca966bf3110a0f0d519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11221 5776 bytes
font_01_sfnt_off000125c6.bin
1731e546c9e1e1a1986ac8f2998b58bb234f966a1f865f15003a73cdefa9eaf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125C6 10804 bytes

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