Malicious PDF — malware analysis report

Static analysis result for SHA-256 a436963bdd637c84…

MALICIOUS

PDF

42.6 KB Created: 2020-09-16 17:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a6d3c038477119e0f190aa087ba19ba SHA-1: 6f01b48bb81ab49c99ac4a3559f86bcdfa1a5352 SHA-256: a436963bdd637c843a6fadf2a7ab23cdfb3008d94d9a655065667921726f3d9b
150 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains a URL that appears to be a lure for 'dead target cheat codes', directing users to a malicious redirector. This suggests a social engineering attack aimed at driving traffic to malicious sites.

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.link/wix?keyword=dead+target+cheat+codes
    • http://files.salt-kitchen-co.com/uploads/1/3/1/4/131437623/mikejazujibuzej.pdf
    • http://juxonobo.leighjaynes.com/uploads/1/3/1/3/131380550/lowonexewono.pdf
    • http://juven.neemaedwardmkwelelewellnessfoundation.org/uploads/1/3/0/9/130969440/rozofojafedoko-jidefafimoxuje-xurizon-zixato.pdf
    • http://files.tuftslaw.net/uploads/1/3/2/6/132683088/ximug-xorulem.pdf
    • https://4bb0c2d5-a187-4f79-80c3-8ea97cb094cb.filesusr.com/ugd/1e52da_a4b300cafe024fcbaca09ce774ebc9df.pdf?index=true
    • https://620b8818-edb2-4ed1-b085-fedf2405dced.filesusr.com/ugd/b463f2_ab79499ffa864177a8177ae974a9df90.pdf?index=true
    • https://469eb19a-9819-4075-be1c-722605d85167.filesusr.com/ugd/a2de88_5e595244c2ae4acfb8be1c2f5eb75eb7.pdf?index=true
    • https://b9baed5f-0991-4acd-9491-267ab2f23c3e.filesusr.com/ugd/33ab24_012f5ba9a4874c3ab81cfe39b78a2783.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/moselufezaxux.pdf
    • https://cdn.shopify.com/s/files/1/0434/7455/0950/files/bungee_font_mac.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/xonugixorelogid.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4708/files/kubota_rtv_900_parts.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.pdf
    • https://cdn.shopify.com/s/files/1/0437/1762/3959/files/dokapijasigevemesoliw.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_off00006976.bin
0b33c0fac5fefd788284579435c7b8b4cfe75d40d5ccac66408d9b862a751c6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6976 5168 bytes
font_01_sfnt_off00007b0b.bin
ca7116a1ec178c1167af87f7dfbcd8e95fb587339c4280a85865a6b8f198b4a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0B 10204 bytes

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