Malicious PDF — malware analysis report

Static analysis result for SHA-256 884d4f081ea238e6…

MALICIOUS

PDF

33.0 KB Created: 2020-09-22 17:07:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49a2c25ef212d8dec71b5541dc7b9ba8 SHA-1: f98af71f1ab3db6396993c60124ddadf9f22ff17 SHA-256: 884d4f081ea238e61579207975cd36d7548351f6ac59bda48a984c9fea37aa7b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to redirector infrastructure. One prominent URL, https://ttraff.club/wix?keyword=jvc+compulink+receiver+manual, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF files, suggesting a link farm or SEO poisoning tactic to lure users to malicious content. The primary attack pattern involves redirecting users to a malicious site under the guise of providing a requested manual.

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=jvc+compulink+receiver+manual
    • http://files.tenayaspeaks.com/uploads/1/3/1/6/131607239/5740736.pdf
    • http://files.byrobinraymond.com/uploads/1/3/1/1/131164236/90a70562.pdf
    • http://files.amosiowa.org/uploads/1/3/1/4/131482881/nelinafetewesulum.pdf
    • http://waxuz.una-atl.org/uploads/1/3/2/6/132683289/nekupen-jedojije-lapoxoj.pdf
    • https://ca7a183c-fdad-429b-bb00-16b45fd3ef14.filesusr.com/ugd/28b3f7_587336ad77c94889aecf1beee65faaa8.pdf?index=true
    • https://7ab0d905-4eb1-4abd-b946-6cdbdc690b98.filesusr.com/ugd/1decf9_f1f1fa0c5ea947a59f8085a689e8a830.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0482/9688/6440/files/bivepiloxatipa.pdf
    • https://cdn.shopify.com/s/files/1/0464/2507/9960/files/antiglobulin_test.pdf
    • https://f08144f0-d115-475b-8591-65f3d7f349a1.filesusr.com/ugd/8aba0c_9c8d9d83e8fe4518a356c6efa915b55f.pdf?index=true
    • https://8222d59e-260c-459b-a8ca-d83342872bb6.filesusr.com/ugd/d7c203_1133e28bba7746078f88488c632d1379.pdf?index=true
    • https://6e7b3636-7770-4189-96c4-4c216f739f55.filesusr.com/ugd/ede58b_a55cb44ab0324377a94431c356b6e5fb.pdf?index=true
    • 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_off0000438d.bin
7392b4ec66e76cb841a2bb7291f0046e8a13ee26cbbb609587ca2d49928cddcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x438D 5016 bytes
font_01_sfnt_off00005490.bin
1fdb75bed60f3371de5a1c930bdceea8957a40e8ceeeccc85da17b09b257b77a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5490 9808 bytes

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