Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd698157e416825…

MALICIOUS

PDF

40.6 KB Created: 2020-05-14 18:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e4b99d6b1ae49bdfabae2665d5cc59c SHA-1: 6dd1c6433cfbdfdb897f9a210093d0295aee6c9d SHA-256: afd698157e4168257006131d0ef58dd0233abb577e98f5e3588dd537b54f73d0
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the 'PDF_SEO_LINK_FARM' heuristic, pointing to various domains. This suggests the document is designed to lure users to external content, likely for SEO spam or phishing purposes. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of direct malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://scihm.net/uploads/1/3/0/6/130604699/130604699.html#bootstrap+3+theme+free
    • http://khojay.com/uploads/1/3/1/1/131164077/belurop.pdf
    • http://grscareers.com/uploads/1/3/0/2/130288720/02fc11.pdf
    • http://companiesandmarkets.com/uploads/1/3/0/3/130313307/d35a5c83.pdf
    • http://curvygirlsdu.org/uploads/1/3/0/4/130483244/75593433c9f67e.pdf
    • http://marthasmaids.org/uploads/1/3/0/8/130814591/d7275c1175.pdf
    • http://kragero-montessori.no/uploads/1/3/0/2/130291579/eab0dd.pdf
    • http://theperfectplatecatering4u.com/uploads/1/3/0/7/130776326/40e8f9bf0bdc3.pdf
    • http://northernservicesolutions.com/uploads/1/3/1/8/131856125/papowuwibuxanezoponu.pdf
    • http://theabyssarts.com/uploads/1/3/0/4/130436271/ruxup-wilewu.pdf
    • http://newsmediaservices.com/uploads/1/3/1/6/131637841/wowolawexukabis.pdf
    • http://mvgadvisors.com/uploads/1/3/0/7/130776060/tejexovifuf.pdf
    • http://amberbeuthien.com/uploads/1/3/0/2/130288462/3094369.pdf
    • http://ptprosportandspine.com/uploads/1/3/0/6/130639272/bedudexixog-sunipanolifata-wasilavi.pdf
    • http://rent2own.today/uploads/1/3/0/5/130590177/90f1d68be.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_off0000726b.bin
884aea1af6816b2ed30dea5668c57987ca08b23bdf418383fd827fc7c5aa7173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726B 10996 bytes

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