Malicious PDF — malware analysis report

Static analysis result for SHA-256 f300f2ca00b686c0…

MALICIOUS

PDF

35.5 KB Created: 2020-08-20 09:04:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f56f888620c7b183e5993fc9c7e3cb9 SHA-1: 51177e0f30ebc64456d0d895dd95bd61b78e2b48 SHA-256: f300f2ca00b686c097a6d612ba35e240f7ef799083b69fefc8032d8f992d374e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=logos+quiz+app+answers+level+15'. The document body, though heavily obfuscated, contains text related to 'Logos quiz app answers level 15' and the malicious URL, suggesting a lure to trick users into clicking the link. The file also contains a PDF link farm heuristic, indicating a large number of outbound links, with the first being 'https://cdn.shopify.com/s/files/1/0432/5608/6696/files/telaborilulorikigok.pdf'. The primary attack pattern involves social engineering through a deceptive document title and a malicious redirector.

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.cc/pify?keyword=logos+quiz+app+answers+level+15
    • http://files.mateosolutions.com/uploads/1/3/1/4/131453436/5862253.pdf
    • http://files.millennialbarbers.com/uploads/1/3/0/7/130775672/7993623.pdf
    • http://files.alohaacaibowls.com/uploads/1/3/1/4/131483281/7126993.pdf
    • http://files.designinghealth.org/uploads/1/3/2/6/132682778/kuxepeminoba-xadetebanoron.pdf
    • http://verabiza.jlizjewelrynmore.com/uploads/1/3/0/8/130874429/18ac78b8da.pdf
    • https://cdn.shopify.com/s/files/1/0432/5608/6696/files/telaborilulorikigok.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/stokes_theorem_example_problems.pdf
    • https://cdn.shopify.com/s/files/1/0431/8648/7456/files/30608898905.pdf
    • https://cdn.shopify.com/s/files/1/0448/4136/9761/files/kaxonuxosimiwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fuwemosuwizukuxitakalav.pdf
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/1790842990.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/85942043694.pdf
    • https://cdn.shopify.com/s/files/1/0432/8767/5036/files/vegusekaluziganuwajusom.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/6040906992.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_off00004bea.bin
fa94086a1808aaeecbaa8c1cca23a87cf8ee4f1016ec79536938fbbae9714c96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BEA 5432 bytes
font_01_sfnt_off00005eaa.bin
d006aacfd0beababd58b0eefda477e2765c5a4f8e30493f79441cbdce16917f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAA 10232 bytes

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