Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5c2d578d322cf71…

MALICIOUS

PDF

46.9 KB Created: 2020-08-15 10:19:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ead56b633379f0d22baa7eee860f45d SHA-1: 648b1095bbfb1850c7d7cfd92c68d8cec0bcd57a SHA-256: d5c2d578d322cf71da4b022e407b1908676fb2635a5a9ed55b1c9a4f66fe7d23
128 Risk Score

Malware Insights

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

The PDF contains a lure related to a 'ceiling fan price list' and includes a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. The PDF also contains a link farm, with many links pointing to Shopify, but one specific URL, https://ttraff.ru/wb?keyword=ceiling%20fan%20price%20list%202018%20pdf, is flagged as malicious. This suggests the document is designed to trick users into clicking the malicious link, likely leading to further compromise.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wb?keyword=ceiling%20fan%20price%20list%202018%20pdf
    • http://tijewuf.giornata.net/uploads/1/3/0/7/130775732/rajonejinitoroma.pdf
    • http://xaliguxu.dbs-fabrication.co.uk/uploads/1/3/0/9/130969618/2e386.pdf
    • http://files.cladstudioz.com/uploads/1/3/1/1/131163859/xogijobubinelibe.pdf
    • http://files.englishinisrael.com/uploads/1/3/0/8/130813755/xedotitebe.pdf
    • https://cdn.shopify.com/s/files/1/0447/5944/9749/files/oxford_children_s_thesaurus.pdf
    • https://cdn.shopify.com/s/files/1/0436/5385/7433/files/84433237859.pdf
    • https://cdn.shopify.com/s/files/1/0436/8164/4697/files/56542527421.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4702/files/swing_trading_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/pre_op_bariatric_liquid_diet.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/selino.pdf
    • https://cdn.shopify.com/s/files/1/0436/8252/9445/files/60409376075.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/79728962344.pdf
    • https://cdn.shopify.com/s/files/1/0433/7647/6311/files/pipabizamopulisus.pdf
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/65224361437.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/74064023022.pdf
    • https://cdn.shopify.com/s/files/1/0434/1219/3438/files/basic_english_worksheets.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_off00007850.bin
9a821b22fca86d5c9a7e83da550d3651a08e108339f4fa36ef44723ebff55ef4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7850 5748 bytes
font_01_sfnt_off00008bef.bin
e7fe52a7b748c4ee4d5ce822261f3156787f960e0e62cd029f34093ca7a24905
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEF 10204 bytes