Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca8033cbaff4e94e…

MALICIOUS

PDF

38.2 KB Created: 2020-08-30 15:28:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ef81fbb9f72931848c60e43c51ae4df SHA-1: 5bd4c7379097d66db4a8197b03e87f7bd2414ce6 SHA-256: ca8033cbaff4e94e1e03bfe3312e43c75c41e5b39524c205f0068c3b428203fc
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to redirect users to malicious content, specifically impersonating an American Heart Association BLS provider manual. The primary malicious URL identified is https://ttraff.ru/wix?keyword=american+heart+association+bls+provider+manual. The document's structure and embedded links suggest a phishing or social engineering attack aimed at tricking users into visiting the malicious 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/wix?keyword=american+heart+association+bls+provider+manual
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/dalvik_bytecode_editor_pro_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/greenhouse_gas_emissions_factsheet_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0465/3291/9446/files/17606868329.pdf
    • https://static.usrfiles.com/ugd/37321e_8b0e82ba1076409eb226021d6e47510f.pdf
    • https://static.usrfiles.com/ugd/b7ab08_034057cb2ae04a3a8da6b0cd3f407a8a.pdf
    • https://static.usrfiles.com/ugd/ea78e0_b1eae354dd4940d8be52437d389e40fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_b556b6a3dcc648a1869f666da74c7f8d.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc3593a299b44a2798f240f0b686a572.pdf
    • https://cdn.shopify.com/s/files/1/0458/6605/7881/files/spring_framework_jars_for_intellij.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/54907412876.pdf
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/49583129119.pdf
    • https://cdn.shopify.com/s/files/1/0431/1685/5453/files/fesiraru.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/arbitraje_internacional.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_off000056a0.bin
c0751ec66d073f081abe63768d2eacada3ad3c931a8936a74b10b129455346c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A0 5500 bytes
font_01_sfnt_off0000691c.bin
af0f3957e24914534eceb499cdb9b924203cfafdfe2060252707c0700eabca3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x691C 10116 bytes

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