Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f77fe685e10083f…

MALICIOUS

PDF

57.7 KB Created: 2020-07-30 09:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b4aceb35e20a1d79e6955b656f377a9 SHA-1: 0b702f918f5f653f7862003571752637b9078b53 SHA-256: 8f77fe685e10083fcb12601592d4b83e6757de81ea0e87d394c3894c45c53f76
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, suggests a lure related to the 'Socrates method' to entice users to click on these links. The presence of a link farm and a redirector indicates an attempt to drive traffic to malicious infrastructure.

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=socrates+method+pdf
    • http://files.realtygal.net/uploads/1/3/2/6/132695492/xunovino.pdf
    • http://files.saltdancecompany.com/uploads/1/3/1/4/131438641/494423.pdf
    • http://files.cambriacountycampcadet.org/uploads/1/3/0/7/130775223/1873094.pdf
    • http://files.cambriacountycampcadet.org/uploads/1/3/0/7/130775223/187
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/30839678638.pdf
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/41296447719.pdf
    • https://cdn.shopify.com/s/files/1/0431/6302/5567/files/54525995784.pdf
    • https://cdn.shopify.com/s/files/1/0440/4399/3238/files/dezetapisanuvarekuborup.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/1319708930.pdf
    • https://cdn.shopify.com/s/files/1/0438/1887/7090/files/49255767895.pdf
    • https://cdn.shopify.com/s/files/1/0437/3266/4481/files/wuwamamono.pdf
    • https://cdn.shopify.com/s/files/1/0429/5992/9503/files/99779387756.pdf
    • https://cdn.shopify.com/s/files/1/0431/1796/9570/files/badosom.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/palumodoxitopumafejotak.pdf
    • https://cdn.shopify.com/s/files/1/0431/3494/3388/files/40966086868.pdf
    • https://cdn.shopify.com/s/files/1/0431/5394/8836/files/33207470772.pdf
    • https://cdn.shopify.com/s/files/1/0434/3175/5932/files/wejepadoxofab.pdf
    • https://cdn.shopify.com/s/files/1/0434/1900/9173/files/47796584428.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_off0000a2db.bin
d9eede597951e976fb3927309b5a79370cb740128ebac98c128230175955a309		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2DB 5100 bytes
font_01_sfnt_off0000b41d.bin
df8c4796f36c814a8cdb1a292364ca4d56a044ee91182986baebda31323dab5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB41D 11312 bytes

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