Malicious PDF — malware analysis report

Static analysis result for SHA-256 7db1f024785cf0d6…

MALICIOUS

PDF

39.7 KB Created: 2020-04-12 10:40:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 575e20123fa9448dcd43316690cb1a41 SHA-1: 5d91fbdef38be92d7e8079112ad9d25f7514eda2 SHA-256: 7db1f024785cf0d6b88b52175e2d78aeb93af38f97f7292dcd4246b5df88dc0d
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used to create link farms for SEO manipulation or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior. The document body contains garbled text and a reference to a medical condition, likely a lure to disguise the malicious intent. 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://devriesinsurance.org/uploads/1/3/1/0/131070605/131070605.html#glomerulonefritis+aguda+postestreptoc%C3%B3cica+slideshare
    • http://chrisminamyer.com/uploads/1/3/0/8/130814921/7429671.pdf
    • http://pocreate.com/uploads/1/3/1/3/131398244/xuwizu.pdf
    • http://crokadile.com/uploads/1/3/1/1/131164104/jogaputufapeda_fogivuxuf.pdf
    • http://transformativemeetings.com/uploads/1/3/0/7/130738739/1948399.pdf
    • http://sarahjaynedesigns.com/uploads/1/3/0/2/130270917/9962193.pdf
    • http://getawesomenow.com/uploads/1/3/1/3/131379256/2a9f5d7b154.pdf
    • http://vegasvalleycpr.com/uploads/1/3/0/4/130435741/9345255.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_off000065e9.bin
e3a9e11047269c7cf4a6fbb51afef18afbda0372a11e4498b45861fc2d1374b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E9 1700 bytes
font_01_sfnt_off00006e00.bin
98eafd89d5beee51b8f2f3a5fc14d32b2591696692149aa5fee18cc96c3a88c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E00 9504 bytes

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