Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b0a67183d66719b…

MALICIOUS

PDF

32.6 KB Created: 2020-06-09 02:11:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d41ec00d31b8d347d81d1a4c25f2d56 SHA-1: 282784638d177d7a462b53ca5b0b1a82f022e679 SHA-256: 4b0a67183d66719bdac8e05753f24952afd71d62f5f8c845634492c94e88c18c
62 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links to external websites, a technique often used for SEO manipulation or to redirect users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating a likely attempt to generate traffic or distribute further payloads. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine a more specific user-facing lure.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://hairreplacementwilmington.com/uploads/1/3/1/3/131381963/131381963.html#est%25C3%25A1tica+mec%25C3%25A2nica+para+engenharia+do
    • http://clevelandcareercenter.com/uploads/1/3/1/8/131871823/93a92c.pdf
    • http://silvermesquiteequestrian.com/uploads/1/3/0/3/130379681/jelep.pdf
    • http://gilliaunas.com/uploads/1/3/0/5/130539255/8286988.pdf
    • https://fugokogan.files.wordpress.com/2020/06/zilevilasuxaxu.pdf
    • https://tulibefeza.files.wordpress.com/2020/06/35733818079.pdf
    • https://binepefase.files.wordpress.com/2020/06/89603906126.pdf
    • https://zoradake.files.wordpress.com/2020/06/gejesefete.pdf
    • https://dezukov.files.wordpress.com/2020/06/ruxez.pdf
    • https://peniruvak376062827.files.wordpress.com/2020/06/54015204656.pdf
    • https://fokewofupipi.files.wordpress.com/2020/06/xurapi.pdf
    • https://pitaxunus.files.wordpress.com/2020/06/xujemir.pdf
    • https://gopisasiru.files.wordpress.com/2020/06/57270128236.pdf
    • https://mokelim.files.wordpress.com/2020/06/maviwemugoniwarurutorig.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005358.bin
ef103829b7adfd8f6fe51404d5d81ee83da422d852206e30fad1442f6b258522		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5358 10588 bytes

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