Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5c6ab4076f861a6…

MALICIOUS

PDF

43.6 KB Created: 2020-07-09 11:33:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 522e2d19d5ef92f8b05731fe5106515b SHA-1: ef58997a1855d1b5b5e0609c227f4f48ab96a2f4 SHA-256: d5c6ab4076f861a63df686983072e757675d4bb6dc0bcc7a9aa86f4a49ba05f5
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 known malicious redirector infrastructure or are part of a link farm designed to manipulate search engine results. The document body, though heavily obfuscated, contains keywords and URLs that align with the heuristic findings of a malicious redirector and a link farm. The primary intent appears to be directing users to potentially harmful websites through deceptive content.

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.com/pify?keyword=beethoven+piano+sonata+8+pdf
    • http://files.domicilyachthotel.com/uploads/1/3/0/7/130775853/jewusa.pdf
    • http://files.westviewflyingclub.com/uploads/1/3/2/8/132815004/vutimaxiriwaf-tijez-zofebejokev.pdf
    • http://files.matchmypartytheme.com/uploads/1/3/0/7/130775651/rujezela_jawabar.pdf
    • http://files.fmquiltbarntrail.com/uploads/1/3/2/7/132740549/49e3ee2.pdf
    • http://files.rcdavis-tellinstories.com/uploads/1/3/1/3/131383624/ebc2656e5828c5.pdf
    • http://files.studiojml.com/uploads/1/3/1/8/131871785/fazexiriguz_fudifeloxasigox.pdf
    • http://files.powersak.com/uploads/1/3/2/6/132681938/4813334.pdf
    • https://wudosuwan.files.wordpress.com/2020/06/limuxoxomozalevilomoj.pdf
    • https://kikivolepo.files.wordpress.com/2020/07/rezumajefirosebegik.pdf
    • https://lapivaw.files.wordpress.com/2020/07/38722613643.pdf
    • https://pikirumabe.files.wordpress.com/2020/06/5472050082.pdf
    • https://jipupuvemot.files.wordpress.com/2020/06/xezifikoronopekuxa.pdf
    • https://xuzetepevot.files.wordpress.com/2020/07/70403262386.pdf
    • https://dodazit994824591.files.wordpress.com/2020/07/88708060306.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sovonuvebapade.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xeniwepisovera.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22537170944.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_off000060b9.bin
77e54e488af1c4bd6caf125a610ac8ce3a7598c1993ac5a943c76ecbc54c529f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B9 5092 bytes
font_01_sfnt_off00007200.bin
0fb6f6c4115a5fe32945432273e8d3ef2458a166e43e93f95eb4e4412c8a4ca6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7200 14688 bytes

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