Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e1cd069c43ef72…

MALICIOUS

PDF

124.9 KB Created: 2020-08-21 10:47:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b5e3e007b880724f3dbe6a4ab0af04c SHA-1: a9eb158eb1e53459991373ded01b2366cfb9b10d SHA-256: c1e1cd069c43ef7244bf8a032b47e0b8e08d26184bc6e4b33b5726977b7dd933
128 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, disguised as an invoice or financial report. The embedded URL https://ttraff.com/pify?keyword=dhfl+housing+finance+annual+report is a critical indicator, likely leading to a malicious site. The document body, though heavily obfuscated, contains text related to 'Dhfl housing finance annual report' and the malicious URL, reinforcing the lure.

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=dhfl+housing+finance+annual+report
    • http://files.greganchauffeurtoursireland.com/uploads/1/3/1/1/131164418/5296334.pdf
    • https://cdn.shopify.com/s/files/1/0429/7293/8399/files/potentiometric_biosensors.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38030937597.pdf
    • https://cdn.shopify.com/s/files/1/0431/2147/5740/files/materialismo_dialtico_e_psicanlise.pdf
    • https://cdn.shopify.com/s/files/1/0430/2392/5402/files/zesunezag.pdf
    • https://cdn.shopify.com/s/files/1/0429/1765/8780/files/kogezegibadifogizikez.pdf
    • https://cdn.shopify.com/s/files/1/0433/9171/3443/files/13183170445.pdf
    • https://cdn.shopify.com/s/files/1/0437/7991/5937/files/centoslatex_command_not_found.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugasodaliza.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/vejuwebopipizibiwofev.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8165/files/81002832678.pdf
    • https://cdn.shopify.com/s/files/1/0435/4267/5608/files/68797285135.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_off0001ab83.bin
f7c96027d1b735d0c65b5f4db0f9d54d09663a36197afa22e41daff486372497		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB83 5276 bytes
font_01_sfnt_off0001bd72.bin
4c28c0eaa03ee4c900d7eb5cc379caee3ef66bef8877521ee1fdb7040ece5a00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BD72 12580 bytes

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