Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66a2f947ff39513…

MALICIOUS

PDF

46.2 KB Created: 2020-08-06 04:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba5f8e9de12ba28343d560f933a15eb3 SHA-1: 95617a563d1d6d0aabc6041afcd9590da969c1d1 SHA-256: a66a2f947ff395130b0849e62d27e4dac7918b1da6f3dedfb32ee05eb67f4d2a
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=axelos+itil+foundation+pdf'. This suggests the document is designed to lure users into clicking malicious links, likely leading to further compromise. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=axelos+itil+foundation+pdf
    • http://files.kingwoodmusikgarten.com/uploads/1/3/0/9/130969768/823b645.pdf
    • http://files.kurtfit.com/uploads/1/3/1/3/131383743/4066736.pdf
    • http://files.michimathias.com/uploads/1/3/0/7/130739251/xirexaveresorud-diripanafuru-jikedi.pdf
    • http://files.galwaygeology.net/uploads/1/3/1/1/131164020/8da0b4a.pdf
    • https://cdn.shopify.com/s/files/1/0431/1393/9110/files/92104363941.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6115/files/73191088163.pdf
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/kurava.pdf
    • https://cdn.shopify.com/s/files/1/0434/7058/6022/files/73415847342.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/kuwevuwamasor.pdf
    • https://cdn.shopify.com/s/files/1/0433/9322/0758/files/22459398189.pdf
    • https://cdn.shopify.com/s/files/1/0431/6699/0498/files/15741084204.pdf
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/navovifexevezilopavavi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/dovotagi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0374/8260/files/nalexokajozurononap.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7367/files/jakilafumosikimi.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/approximation_theory.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ninitegabi.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_off000077d1.bin
766cd5b669159a064f659d7887ad04dc12c74a64673304ce6d5a509bed639d8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D1 4996 bytes
font_01_sfnt_off000088ee.bin
b181de90e4ca4eb5de50832a9343086b00482d8d287747c8420fd829756ecff3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88EE 10152 bytes

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