Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec4f331b06501c91…

MALICIOUS

PDF

49.0 KB Created: 2020-04-21 18:03:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 921bc57bc0a3c6ea03fd6fefaff1ccbd SHA-1: 77b1446d60140a7b337e806123c5a5032bc871e5 SHA-256: ec4f331b06501c91608298b2d1518a5920debccdf086f97253452f02213a48e9
62 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 to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains references to these URLs. This suggests the primary purpose is to act as a link farm, potentially for SEO manipulation or to distribute further malicious content through the linked PDFs.

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://msonormaltable.net/uploads/1/3/0/5/130550911/130550911.html#mapa+budapest+turismo+pdf
    • http://barsoumianhermann.com/uploads/1/3/0/8/130874608/9589190.pdf
    • http://goodlooktouring.com/uploads/1/3/0/5/130588435/7797609.pdf
    • http://victorycc.org/uploads/1/3/0/7/130739093/wovunen-mirinof-rosilo-gamepenuku.pdf
    • http://madcity.club/uploads/1/3/0/7/130776103/4a624162e00e9.pdf
    • http://jibesolutions.net/uploads/1/3/1/4/131482919/4019265.pdf
    • http://ladywithaharpniagara.com/uploads/1/3/1/3/131378814/3379126.pdf
    • http://mydivinewomb.com/uploads/1/3/0/8/130814858/puwarisaxixexotupix.pdf
    • http://mogulmeadows.org/uploads/1/3/1/3/131379836/1487638.pdf
    • http://lknsuppliesgifts.com/uploads/1/3/1/3/131378970/dinilakuvigam.pdf
    • http://11pluscolchester.com/uploads/1/3/0/3/130323315/b77c979.pdf
    • http://mykdwonline.net/uploads/1/3/1/3/131383475/pabuxuzel_joradebe.pdf
    • http://antaresservices.org/uploads/1/3/1/3/131383464/b4b97edb8c0.pdf
    • http://cvsauto.com/uploads/1/3/0/6/130621569/7082479.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_off00008bd1.bin
4e8c98d66bef5f565e48a8c3047b11fb132b8dc8f6618e738e59daffd3c32a4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD1 10492 bytes
font_01_sfnt_off0000af6f.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF6F 1708 bytes

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