Malicious PDF — malware analysis report

Static analysis result for SHA-256 43d2f2f5aa97c3e0…

MALICIOUS

PDF

43.8 KB Created: 2020-09-01 02:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5322fb794b7179ed1dd033b1fdd192c9 SHA-1: 1ad85194dae3638dec53fff329164021d14c8146 SHA-256: 43d2f2f5aa97c3e0380e248bee3ac59e15903858167f67963f96e1d9e8eefa04
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of these links redirects to a known malicious domain, ttraff.ru. This suggests the document is designed to lure users to malicious websites, likely for phishing or to download further malware. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious redirection attempt.

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/wix?keyword=colorado+semi+guided+elk+hunts
    • https://cdn.shopify.com/s/files/1/0437/4082/3706/files/fejeti.pdf
    • https://cdn.shopify.com/s/files/1/0433/1244/7652/files/walepowi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dijupabexapuvasazanuripik.pdf
    • https://cdn.shopify.com/s/files/1/0460/7085/7892/files/kiwunanuzuzal.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3144/files/gta_vice_city_new_cheat_codes_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/cool_math_frizzle_frazzle.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/nusesupefekuwexawikel.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4449/files/baluni.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.pdf
    • https://cdn.shopify.com/s/files/1/0438/3558/8770/files/pip_reinstall_package.pdf
    • https://cdn.shopify.com/s/files/1/0463/1828/9053/files/48881707654.pdf
    • https://cdn.shopify.com/s/files/1/0438/6127/8870/files/83232334056.pdf
    • https://cdn.shopify.com/s/files/1/0451/1688/3109/files/mijofifusuza.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0c2f56a47c141cfbb862ec6b0ebc8f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_3085020aa0f5482d9b86b8fde5c99ee7.pdf
    • https://static.usrfiles.com/ugd/b8c837_111be8e04a0643abb911abb56fa8c3e2.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/
    • https://cdn.shopify.com/s/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b9c.bin
f117734ded101169fccb82800e294db15c465af9082a7d1612d26139c4d2597e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9C 5208 bytes
font_01_sfnt_off00007d1d.bin
b2dd5f771b91a909e39909a4f85ca21f1d94b0dbcba246028b096f9f0005fe09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1D 10880 bytes

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