Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7887846bdaf85f7…

MALICIOUS

PDF

42.4 KB Created: 2020-08-04 20:30:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fd441b59b2410bee0c9de4271accca1 SHA-1: c767f03078a873c768b15ee3f155fee7ab59d8fd SHA-256: e7887846bdaf85f7902caf93436e9c556852b6d2fe0dfe44d5bb5d04a94ec4be
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=architectural%20design%20elements%20pdf', which is also present in the heuristics. This suggests the document is designed to lure users to malicious sites, likely for phishing or malware distribution.

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/wb?keyword=architectural%20design%20elements%20pdf
    • http://files.loganmona.co/uploads/1/3/2/7/132740905/mogije.pdf
    • http://files.elizabethkpetersonlab.com/uploads/1/3/1/3/131384789/sibufajoj-xuvini.pdf
    • http://files.craiglistschryslerkcar.org/uploads/1/3/0/7/130776111/tuvasaso_janakawabobed_wavepajerenala.pdf
    • http://files.lakotawesttheatre.net/uploads/1/3/1/0/131070336/roludogo.pdf
    • http://files.ontherisestore.com/uploads/1/3/1/6/131607777/d805f55edc.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/87582710731.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4998/files/dosedefagazedo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5738/1530/files/rezotapubofekigupinaki.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/wujopukekejifinan.pdf
    • https://cdn.shopify.com/s/files/1/0437/2522/6133/files/10057458976.pdf
    • https://cdn.shopify.com/s/files/1/0431/9114/0512/files/59873228813.pdf
    • https://cdn.shopify.com/s/files/1/0434/2562/8327/files/dodge_dakota_manual_transmission.pdf
    • https://cdn.shopify.com/s/files/1/0439/4532/8808/files/81038057822.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/losiwobaneni.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/31783097814.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_off0000683d.bin
978d2caf57cff3c7e8a10862bf9900ff99e12dba942aba8d38a3df15f7a286df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x683D 5556 bytes
font_01_sfnt_off00007afa.bin
f944578f2df90cb184ebced5a9c7f6eae67e37753c174bcc7c22796ae7628f50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFA 9932 bytes

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