Malicious PDF — malware analysis report

Static analysis result for SHA-256 278973988945c888…

MALICIOUS

PDF

71.9 KB Created: 2020-06-16 00:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99bf5fd62bf194c14b4d259d5a7b1261 SHA-1: e24fcfe7476e97f76b716d126037fdec5e0b078e SHA-256: 278973988945c88879ac55040f5306d91b44e095fa054ba7be20b9c2b71df142
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm for SEO manipulation or malicious redirection. The document body, though heavily obfuscated, contains text related to a 'Sony vaio recovery center guide' and references 'wkhtmltopdf', indicating a potential lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://volunteerppgreatplains.org/uploads/1/3/1/6/131606059/131606059.html#sony+vaio+recovery+center+guide
    • http://3t2.undesirable.us/uploads/1/3/0/7/130740235/kowunijedapate.pdf
    • http://mx.hellojessicaann.com/uploads/1/3/0/3/130323302/9faf508b1.pdf
    • http://urbanintrigue.com/uploads/1/3/0/2/130289244/322653.pdf
    • http://awesomesandiegocleaning.com/uploads/1/3/0/6/130621832/bubalizubonufifizowa.pdf
    • http://mta-sts.davidhellams.com/uploads/1/3/0/6/130604685/bavajumekarole.pdf
    • http://wellnessreclamation.com/uploads/1/3/1/8/131871614/vawabagaxamaje.pdf
    • http://eleven11realty.com/uploads/1/3/1/4/131453980/gatamasedatarijubive.pdf
    • http://girlfriendspoweracademy.com/uploads/1/3/0/7/130776263/zisugujigilubin-dagefaxojagekem-kokajezazojub.pdf
    • http://southernplains.net/uploads/1/3/0/5/130542936/a4b42b.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_off0000d002.bin
6a8c4633191ae1ecea03b31e039799dff29403223db19f0257d1589d5e223208		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD002 18128 bytes
font_01_sfnt_off0000fdaf.bin
428272cc0de905972d5a33e693eafe869e1c78d6c685a5dbeb07779450dd9e4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDAF 16084 bytes

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