Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe744d68503502e…

MALICIOUS

PDF

70.6 KB Created: 2020-08-12 13:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36ac97615c2fb385100c3ba975c4d3a4 SHA-1: c094ec0672fe080bc8d843814970fb2fc890e6ed SHA-256: abe744d68503502eb7a0667c2caec11b2154a5f5985a3816a4edf2fd1bf72151
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'patent invention' and a URL that aligns with the malicious redirector heuristic. The presence of numerous external PDF links suggests a link farm or SEO poisoning tactic to distribute malicious content.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.com/pify?keyword=le+brevet+d+invention+pdf
    • http://fepozat.nickmartine.com/uploads/1/3/1/6/131637240/8205200.pdf
    • http://kiwabeg.teamaudioeye.com/uploads/1/3/1/4/131438142/3d5cb.pdf
    • http://ruliw.hollinsworthproductions.com/uploads/1/3/0/7/130738714/sazofusabo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/diremuzuraguni.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/vaxuto.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8807/files/64549616545.pdf
    • https://cdn.shopify.com/s/files/1/0431/8268/6367/files/15063760782.pdf
    • https://cdn.shopify.com/s/files/1/0434/2733/2245/files/54639645821.pdf
    • https://cdn.shopify.com/s/files/1/0438/9352/2587/files/28646817938.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5858/files/tirewinefixamasomamugatu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0755/7279/files/90792649449.pdf
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/bosemeli.pdf
    • https://cdn.shopify.com/s/files/1/0434/1995/9463/files/muscle_labeling_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/2338/4219/files/womasilevaxanezexeran.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_off0000daa4.bin
8c48ebe4a76e81475f37d8eb56746ae400d7e6276da65515dc7f7cad016da0fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA4 4756 bytes
font_01_sfnt_off0000eaec.bin
71a07874c28f18edd748276e44df037e8b426ad1fcc3325720c318516b503436		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAEC 10264 bytes

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