Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b6bc702f054bdca…

MALICIOUS

PDF

39.9 KB Created: 2020-04-10 14:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bcf60944a4bc1f73f3d41a44d0ce51c9 SHA-1: f085be787b8dc0265d8cb9afe20ac5ec96761f9c SHA-256: 8b6bc702f054bdca50ab84be01137f057075380e9d43ff327eed4804d70aa782
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDFs hosted on various domains. This behavior is indicative of a link farm or SEO poisoning attack, designed to drive traffic to malicious or low-quality content. The ML classifier strongly supports the malicious verdict, and the PDF structure suggests an attempt to obscure the true nature of the content by embedding it within numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://blueridgechildrensmuseum.com/uploads/1/3/1/3/131379591/131379591.html#macbeth+act+1+questions
    • http://animalmuscle.com/uploads/1/3/0/3/130379377/pibare_pezaxezasu_sivotabiraku.pdf
    • http://j-aponi.com/uploads/1/3/0/5/130541313/sativudavusesibi.pdf
    • http://hillingdonmotors.com/uploads/1/3/0/2/130272081/puxugok_wevisazugi_timibil.pdf
    • http://kingstreetcycles.com/uploads/1/3/1/3/131398143/1930500.pdf
    • http://onceupona.city/uploads/1/3/0/8/130813804/9eadaf3f0b4b5fe.pdf
    • http://reeltreasurez.com/uploads/1/3/0/2/130292148/7952983.pdf
    • http://5elementrootsandbranches.com/uploads/1/3/1/6/131637279/4165362.pdf
    • http://travelcafe.blog/uploads/1/3/0/6/130639892/2344954.pdf
    • http://empleos.fun/uploads/1/3/0/6/130604192/sesuratago.pdf
    • http://final-portfolio.com/uploads/1/3/0/7/130776180/rapimejavibeside.pdf
    • http://thefreemenhouse.org/uploads/1/3/0/4/130475955/bivolofozodazawiva.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_off00006923.bin
df92265bad360fad9751d389fcaf7b6932041b7ff45292d46d1c95a801bad9b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6923 7900 bytes
font_01_sfnt_off000087c2.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87C2 2652 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.