Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c93dd4aae3fbd6…

MALICIOUS

PDF

49.5 KB Created: 2020-08-10 13:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bed3eb7197d127e06e2cb3e341b5824 SHA-1: 0cf46894be66d9b3540d214837e6e1b1253c9ee4 SHA-256: f0c93dd4aae3fbd60a61f8c1b38ff16c8ce16261faddf2c44a72fec443d2e94c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. This suggests the primary purpose is to lure users to a malicious site via the redirector.

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.ru/pify?keyword=slow+dancing+in+a+burning+room+piano+pdf
    • http://files.joewillis.net/uploads/1/3/1/3/131379591/tafuzir-dozedox-mazinovaw.pdf
    • http://files.grpastors.org/uploads/1/3/1/0/131070618/faripurewike.pdf
    • http://faxov.mrjohnmiddleton.org/uploads/1/3/1/4/131406717/pagenotuvinaxepuxisu.pdf
    • http://files.youthcoalitionfl.org/uploads/1/3/2/6/132682731/643958.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/kubolixevutiwudofamoj.pdf
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/33935526184.pdf
    • https://cdn.shopify.com/s/files/1/0430/0210/1923/files/79955939511.pdf
    • https://cdn.shopify.com/s/files/1/0431/1554/4737/files/serological_diagnosis_of_infectious_diseases.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/92835544334.pdf
    • https://cdn.shopify.com/s/files/1/0434/4181/5718/files/tesililenovapuwabepelenat.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/fegoneruzarixes.pdf
    • https://cdn.shopify.com/s/files/1/0441/0854/6200/files/endometrial_ablation_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0434/5220/3161/files/bipemeginufedugadazadage.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/tivojululiviki.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/
    • https://cdn.shopify.com/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000083c0.bin
d62858f1c66770ee263d1ace5abbda7593e061fce6e712864c7282f38cece6fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83C0 5632 bytes
font_01_sfnt_off000096e7.bin
da51d4073b99359bc6231a16a118a83eb8e24ac1c9e7cf606966a067bf95be05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96E7 9852 bytes

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