Malicious PDF — malware analysis report

Static analysis result for SHA-256 aebae206afa67828…

MALICIOUS

PDF

35.2 KB Created: 2020-09-07 04:11:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 026b2a4767c4a98cf057268cef7b3b9e SHA-1: cd57a27b2d72246441f0e66f6fab1398c0696849 SHA-256: aebae206afa67828113be0d48ed041ceed6980f5bb80ad833e17a2079fca0c27
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of external links, indicating a link farm. The primary malicious URL, https://ttraff.cc/wix?keyword=cintas+uniforms+springfield+mo, is likely used to direct users to a phishing or malware-hosting site. The document body contains garbled text but includes the same malicious URL and several other URLs, some of which are benign. No scripts were extracted from this sample.

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/wix?keyword=cintas+uniforms+springfield+mo
    • https://static.usrfiles.com/ugd/e3ed1f_8b46a38432f345169cf13769e1f4772f.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_f3506c5c15c24286b530792f691b3939.pdf
    • https://static.usrfiles.com/ugd/866690_6de5a84983fa416e9b005af8dc096ef5.pdf
    • https://static.usrfiles.com/ugd/f2c1dc_5b311e384eda418bb3268b716a0dbba4.pdf
    • https://cdn.shopify.com/s/files/1/0435/5227/6632/files/types_of_logical_fallacies_and_examples.pdf
    • https://cdn.shopify.com/s/files/1/0436/2895/3763/files/ldap_admin_tool_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8165/files/61271223039.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2741/files/37051070139.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/difference_between_am_and_fm_modulation.pdf
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/endless_ocean_2_adventures_of_the_deep.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_off00004aa2.bin
29c0d6a778c2c68bbc5bb21a97cf9ce2db5f5e646a956e923eeb55c35e0ef5bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA2 5268 bytes
font_01_sfnt_off00005c76.bin
958a162294a27638dc155515472897058a6d828ef4bbe957f3571039f193e76f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C76 10468 bytes

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