Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bf2d5d68d32775c…

MALICIOUS

PDF

44.3 KB Created: 2020-08-03 02:37:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1956372b0687d187ae16df62333a202 SHA-1: b3e444d80292a74d1f6468b6d2a29efb2d3fac09 SHA-256: 2bf2d5d68d32775c9dd6e984e6781248f0239311c7df94be732aa29b4a610438
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'G suite hipaa compliant' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm and a critical PDF redirector heuristic indicates a deliberate attempt to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=g+suite+hipaa+compliant
    • http://files.support.famhealth.com/uploads/1/3/1/4/131437740/3357936.pdf
    • http://files.iorinishioka.com/uploads/1/3/1/1/131164424/d5cf35cf17ab65.pdf
    • http://files.wnyfaafa.org/uploads/1/3/1/4/131411688/lofagujopenuni.pdf
    • https://cdn.shopify.com/s/files/1/0433/5081/8981/files/rugonunulagifibotug.pdf
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/jonalokupolifogexudena.pdf
    • https://cdn.shopify.com/s/files/1/0436/6237/7113/files/jipejosaxojefepojixinobe.pdf
    • https://cdn.shopify.com/s/files/1/0438/6104/9494/files/54598690002.pdf
    • https://cdn.shopify.com/s/files/1/0430/8071/2343/files/67076812777.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7347/files/fojamunisivogatikobetit.pdf
    • https://cdn.shopify.com/s/files/1/0432/6791/5936/files/xewuzukinogigew.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/lafigib.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/dewuwodufiwasadopa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5385/9494/files/wukong_jg_s6.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5157/files/41460188533.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_off00006822.bin
6e715bc32bdda39c3ed444f0648770ffb4471f552aaed6b80fb0d7d48bb243a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6822 5108 bytes
font_01_sfnt_off0000795f.bin
80348f6a555ccc84d5508f40c8475febd1edab2e8655cb2313b857c4e67a995d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x795F 13900 bytes

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