Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0a79ae7023e8c3f…

MALICIOUS

PDF

44.6 KB Created: 2020-09-22 02:59:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0230743b485624480fdf82269e6b40cb SHA-1: bb92b712f91d5ce94fb6ab120556c8a49ff8e5da SHA-256: d0a79ae7023e8c3f4bebb31cdad711abc759e63401402e7fa2fa7bdfba795368
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to known malicious redirectors or link farms. The primary malicious link identified is https://ttraff.club/wix?keyword=the+prince+kiera+cass+pdf+weebly, which is likely used to redirect the user to a phishing or malware distribution site. The ML classifier strongly supports the malicious nature of this PDF.

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.club/wix?keyword=the+prince+kiera+cass+pdf+weebly
    • http://files.seahillfarm.com/uploads/1/3/1/6/131636828/9f2bae83426.pdf
    • http://sewasim.ldupholsterymaui.com/uploads/1/3/0/8/130814328/05f914046a972e6.pdf
    • http://files.3dpormexico.org/uploads/1/3/0/7/130775384/gitumipowigubewen.pdf
    • http://bewarofa.pauldeklerk.net/uploads/1/3/1/4/131407045/7846191.pdf
    • http://jaxitob.jillianbretzdoula.com/uploads/1/3/1/6/131636813/fudisapisazikezuviv.pdf
    • http://files.airprogerogia.com/uploads/1/3/1/3/131384424/vunufelupere_zemaremi_kanufig.pdf
    • https://6a38c02c-a2b6-4e41-996b-798069919489.filesusr.com/ugd/c4b402_d413658f0d024effaef9ec0085640238.pdf?index=true
    • https://bedd2303-3fec-42b7-9d6a-2ba735ff3f7f.filesusr.com/ugd/ecec20_1767be3565614185ab7e215cff6e26a7.pdf?index=true
    • https://faeb11d8-7221-4c44-af60-67b891dac697.filesusr.com/ugd/cc089a_8e98076208c548c4902b51c58e678264.pdf?index=true
    • https://b6f3149a-910b-494a-8e03-533b1bf27308.filesusr.com/ugd/865d50_9e660969b01f4144bfd0c469b4ca20cd.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0452/6401/1421/files/spray_de_calendula.pdf
    • https://cdn.shopify.com/s/files/1/0434/7422/3269/files/uniaxial_compressive_strength_test_lab_report.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_off0000698d.bin
77cd777f944a026d99ae0996af16e3cdbcb94a8681425d067dcf019dc41614c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x698D 5588 bytes
font_01_sfnt_off00007c9b.bin
9d1c74e13dbd4169e5f52d76c2072093a8731c34171999337f15045a2db02244		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9B 12776 bytes

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