Malicious PDF — malware analysis report

Static analysis result for SHA-256 c04c03a7ee48f049…

MALICIOUS

PDF

48.9 KB Created: 2020-03-25 03:58:58 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6938e35a34a29dd7e0eb89e13aa78c4b SHA-1: 00dc20d6ccda671f7ac6564151427de97467762c SHA-256: c04c03a7ee48f049b11d254205186e24e7caea12ae7da00f61a9b615a82abd8e
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, a technique often used for SEO link farming or to direct users to malicious content. The document body itself is minimal, containing only a question and the PDF generation tool information. The primary heuristic firing indicates a 'PDF_SEO_LINK_FARM', suggesting the document's purpose is to host numerous links to other PDF files, likely as a lure or to manipulate search engine rankings. No scripts were extracted from this sample.

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://escorti-milano.com/uploads/1/3/0/5/130588810/130588810.html#q+significa+cute+en+espa%C3%B1ol
    • http://luiscunha.net/uploads/1/3/0/3/130379287/4b83ba813.pdf
    • http://diaryofaformerdoormat.com/uploads/1/3/0/6/130605403/31d08095.pdf
    • http://gloriagarciafernandez.com/uploads/1/3/0/5/130545957/zilelerapis-gototusesemani-veven.pdf
    • http://wakesurfingtips.com/uploads/1/3/0/5/130539053/xidujoginoxaz.pdf
    • http://kokopelliskorner.net/uploads/1/3/0/2/130287872/4169611.pdf
    • http://www.iamsoundandvideo.net/uploads/1/3/0/5/130539437/da2556c.pdf
    • http://morph-bcs.com/uploads/1/3/0/6/130621870/vuwiwuduvete.pdf
    • http://srirachacamp.com/uploads/1/3/0/6/130639884/vuxuwefupugi.pdf
    • http://theurbanclimatologist.com/uploads/1/3/0/3/130380084/3660287.pdf
    • http://simplyexquisitehg.com/uploads/1/3/0/5/130588847/jiwapuforigakovosuru.pdf
    • http://ssenmmh.com/uploads/1/3/0/9/130969462/zirurol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f94.bin
c1516b3a1032f1c30f09c2e4e7f2de2e47fc174a9c6752c9d19b3400c580ae8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F94 9392 bytes
font_01_sfnt_off000091ac.bin
885781ec91db75dc8c4a6a3d3dac0324bdfdb8f2239dab70466c62035ae072da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91AC 4144 bytes
font_02_sfnt_off00009ea2.bin
96ce77eadb5ccb6287397bc6dc51f1ca6434f6c20a9a9635ea42561d8bd7d3ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA2 16112 bytes

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