Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d4f1fd063b8abdd…

MALICIOUS

PDF

32.8 KB Created: 2020-06-11 18:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a30729403a142bd6544e521a0feed60 SHA-1: 1ada67029873c17f3d1be7370d1a866fd7388690 SHA-256: 2d4f1fd063b8abdd3e0835a8a4dcdf4c10228d017d7318e156bc45796dbf5a5a
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to domains that appear to be part of a link farm. The document body, though partially corrupted, contains references to a 'user guide' and the authoring application 'wkhtmltopdf', suggesting a deceptive lure. The primary intent appears to be driving traffic to these external sites, likely for SEO spam or to host further malicious content.

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://rentacamper.se/uploads/1/3/0/4/130483617/130483617.html#bb200+user+guide
    • http://silvercanes.com/uploads/1/3/2/3/132302894/davofo.pdf
    • http://haiwangxingxianshangyuledaili.br3h.com/uploads/1/3/0/5/130551057/poxugipagudod.pdf
    • http://snuk.io/uploads/1/3/0/6/130620464/5617515.pdf
    • http://veronicasbridalshop.com/uploads/1/3/0/6/130639076/nibuwizab.pdf
    • http://31i.undesirable.us/uploads/1/3/0/3/130324005/vasojifarog.pdf
    • http://robinellisproperty.com/uploads/1/3/0/6/130640046/f9a0ed.pdf
    • http://simpledesignsbyjennifer.com/uploads/1/3/1/0/131070705/firigamoduwesogoruw.pdf
    • http://williamolsencpa.com/uploads/1/3/0/4/130483300/6812367.pdf
    • http://aww.bensirestaurants.com/uploads/1/3/0/8/130874189/3305998.pdf
    • http://wolfecityhomecoming.com/uploads/1/3/0/3/130379049/vigira.pdf
    • http://3577productions.com/uploads/1/3/1/3/131382693/1551866.pdf
    • http://wangchungs.square.site/uploads/1/3/0/2/130272333/vagix_ranineripoli.pdf
    • https://dexuzonuluw.files.wordpress.com/2020/06/91572964037.pdf
    • https://busijosogoxu.files.wordpress.com/2020/06/61577414102.pdf
    • https://dodazit994824591.files.wordpress.com/2020/06/66452140582.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_off0000545f.bin
e4a8567123f999f4ac98c2ae54ba1501f96d42d92a09b7db846f300bb1d7e169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x545F 10448 bytes

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