Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a52dc16819938a…

MALICIOUS

PDF

52.9 KB Created: 2020-08-18 15:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c564a6ec079a07425440522dec07b372 SHA-1: 7835537e62f4cf6882998bac662b72acf9df6dae SHA-256: 46a52dc16819938a77ba33237049e99e04fbc7e7255b792240fd82a3fd1365a6
136 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 an 'Amex credit card application form' and embeds numerous links, including one pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the link leads to malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic indicates a large number of outbound links, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute malicious content. The document body, though heavily obfuscated, contains the malicious URL.

Heuristics 5

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=amex+credit+card+application+form
    • http://files.faithfullyfitforlife.com/uploads/1/3/1/3/131398308/8e7cdb12c2a.pdf
    • http://files.acebrasstrio.com/uploads/1/3/1/3/131398236/8cf92bfcc.pdf
    • http://files.triciarose.com/uploads/1/3/0/8/130813364/1552950.pdf
    • http://figudino.plasticfreegreece.com/uploads/1/3/0/7/130776021/mezug.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/fevufesutiguleba.pdf
    • https://cdn.shopify.com/s/files/1/0443/8091/3830/files/e_h_coriolis_flow_meter.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xopiforosolakalaxelavur.pdf
    • https://cdn.shopify.com/s/files/1/0436/7787/6377/files/xikozex.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0435/files/30864930255.pdf
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/3001752345.pdf
    • https://cdn.shopify.com/s/files/1/0432/2285/9944/files/xesinejubibuwad.pdf
    • https://cdn.shopify.com/s/files/1/0440/4586/1014/files/nalufud.pdf
    • https://cdn.shopify.com/s/files/1/0439/5529/0270/files/14939322138.pdf
    • https://cdn.shopify.com/s/files/1/0431/8461/9681/files/57228550326.pdf
    • https://cdn.shopify.com/s/files/1/0438/6743/9259/files/tanuranedozal.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/panotupid.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/10244725669.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/us_map_with_cities.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_off00008f33.bin
2c4020aafdb7608d6cb1a5a429db848357b29a9dda0d566b87ebe70b86945cc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F33 5180 bytes
font_01_sfnt_off0000a0bb.bin
9c384af301309819e51377547153a618350f5f5dc896a2913955dbd4ea1a9777		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BB 10908 bytes

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