Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e3f2652d751658…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 12:24:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe753a2c1dc8451610be5963ff5aa9b7 SHA-1: d6cc38806bcfb737d6fbcfaa099f1bdc41eb4b97 SHA-256: e6e3f2652d751658331499572e75cb4f72f1591abbdb1a9cfd3380d2fb815afd
128 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=freelance+retainer+contract+template', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a 'Freelance retainer contract template', aligning with the 'SE_INVOICE_LURE' heuristic. This indicates a social engineering attempt to trick the user into visiting a malicious URL, likely leading to further malware download or exploitation.

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=freelance+retainer+contract+template
    • http://files.brmandel.com/uploads/1/3/1/4/131407823/4141153.pdf
    • https://cdn.shopify.com/s/files/1/0432/7633/7318/files/6576221982.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9221/files/41941228256.pdf
    • https://cdn.shopify.com/s/files/1/0447/9365/9541/files/biometric_voting_system_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0431/8281/7441/files/protein_synthesis_process.pdf
    • https://cdn.shopify.com/s/files/1/0433/6146/8571/files/19842948528.pdf
    • https://cdn.shopify.com/s/files/1/0437/6579/2929/files/88043227115.pdf
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/71330579809.pdf
    • https://cdn.shopify.com/s/files/1/0428/9619/5737/files/mathematical_excursions_aufmann.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/20271090077.pdf
    • https://cdn.shopify.com/s/files/1/0437/6163/1384/files/ansys_help_manual.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_off00006de5.bin
99d6a5b52c83055813d08bb9eb28e1b29fd0aa3a632b3f817de02c741e05c889		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE5 4856 bytes
font_01_sfnt_off00007e4c.bin
1b44346022cdc9aad268990832bf1c74c06ee1bb3a9a73a08795e1a19fa0ec66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4C 10336 bytes

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