Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e254d1d0d6d9a9…

MALICIOUS

PDF

33.2 KB Created: 2020-09-17 11:58:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 964b93868ae7fb12078ded2176a7c8d7 SHA-1: 4f4aaf34a6886b952bb7d1df8dba68d5de714741 SHA-256: 66e254d1d0d6d9a9cb8244615e38cf9ad0ee174af5bd8d9b95a043f4554cf5de
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links pointing to external PDF files, characteristic of a link farm. One of the primary links, 'https://ttraff.club/wix?keyword=hot+yoga+pasadena+schedule', is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the structure and embedded links suggest a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=hot+yoga+pasadena+schedule In PDF document text
    • http://miposog.sharoncarrjewellery.com/uploads/1/3/1/4/131437254/1096518.pdfIn PDF document text
    • http://zekipux.mentesconscientes.org/uploads/1/3/0/7/130739107/7745372.pdfIn PDF document text
    • http://files.pahasapagrotto.com/uploads/1/3/1/6/131606798/6132903.pdfIn PDF document text
    • http://bodikud.arturoaguilarphoto.com/uploads/1/3/1/3/131381679/fixukumodedinapap.pdfIn PDF document text
    • http://tarokox.veryvioletboutique.com/uploads/1/3/1/4/131452958/pivisif-jitisufakare.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2d5a3363-4a71-4faf-b4d0-d84a04991514.filesusr.com/ugd/7b00a0_6c16888540a24628aa5655fbd6cfa2d8.pdf?index=trueIn PDF document text
    • https://48d66950-44b4-4450-a64d-9763f2c267cb.filesusr.com/ugd/b2ba6b_25f08559d31c49f780367f6bc9425659.pdf?index=trueIn PDF document text
    • https://bef7ec1f-b751-411c-a257-1443a5fb9379.filesusr.com/ugd/238140_1348e08c978247b6a824316b926a32c7.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0281/3849/files/call_of_duty_modern_warfare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/kuxolurabawewakexowekasep.pdfIn PDF document text
    • https://4369f4c1-71b9-4395-8b02-03b4dba7f08d.filesusr.com/ugd/d13e1f_f07dcae756ad452280b89b490869f60d.pdf?index=trueIn PDF document text
    • https://4049a62b-dfd4-49c8-991d-278de3e5d61e.filesusr.com/ugd/a37a2e_683b2b1847ba4e75b730959e7f1965c8.pdf?index=trueIn PDF document text
    • https://fd031e9c-2430-4e50-ab13-b22f204edfd7.filesusr.com/ugd/65b209_90ac8f1e7e2442d6a9d8b8ea4c25c2b3.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044cc.bin
a6cbb89b5ea518b25e3311fadd1775d3aab38240c3d49efc4d740cec70afd7d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44CC 5300 bytes
font_01_sfnt_off000056df.bin
4dd654aafcf61ae66101fc618335816b6053a8bc242d0b83b3085b9511c4d55e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56DF 9808 bytes

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