Malicious PDF — malware analysis report

Static analysis result for SHA-256 96fdae25c8d8162e…

MALICIOUS

PDF

29.1 KB Created: 2020-04-26 00:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4d338ee195f609b96d10deb05ac0bfa3 SHA-1: 270d8c705f4fe1eb85a14de6726b03cf2374136b SHA-256: 96fdae25c8d8162e17ed8c96f4a75c3a822cbceadaf24d937766c7b089be88b0
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains. The document body text, though partially corrupted, includes a reference to 'free online einthusan video er', suggesting a lure to entice users to click on these links. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to distribute malicious content. No scripts were extracted from this sample, but the extensive use of external links points towards a delivery mechanism for further malicious activity.

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://twistedsugarut.com/uploads/1/3/1/4/131406532/131406532.html#free+online+einthusan+video+er
    • http://leregoleditozzimagazine.com/uploads/1/3/1/4/131409210/nipiretusefobifabil.pdf
    • http://theyellowrabbit.com/uploads/1/3/0/2/130270837/fupusolegeler.pdf
    • http://milf-universal.com/uploads/1/3/0/7/130775478/4535755.pdf
    • http://bellinfischer.de/uploads/1/3/0/6/130604537/nepad_jifoposotija.pdf
    • http://cvarb.com/uploads/1/3/0/6/130639575/litozenebomuruset.pdf
    • http://nolatourhub.com/uploads/1/3/0/5/130590537/manejuzarogowuxa.pdf
    • http://forerunnerfitnessdfw.com/uploads/1/3/0/3/130323337/45cab2cfaa.pdf
    • http://creolegolddelivery.com/uploads/1/3/0/7/130739731/b326d41cc.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_off00004c41.bin
c92bbd5a033cf4c1cbc6a784bf9fc4c213a4e181002de705967fbfada073531d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C41 7548 bytes