Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a63da8d9c0ff14e…

MALICIOUS

PDF

36.0 KB Created: 2020-04-17 13:39:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 556f1ad0bb767b8f0ff3fece40b336bd SHA-1: cb9c8b581c7943cc958f5aff7074990cc7db914d SHA-256: 4a63da8d9c0ff14e311403fcee0ee5bc668467d11f9a23109ef0fe4f7d125874
62 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to appear as search results, directing users to potentially malicious PDF files hosted on various domains. The primary lure is a link suggesting a PDF download for 'Meditations marcus aurelius pdf reddit', which resolves to a URL on 'nursingarmpillow.com'. This technique is commonly used for SEO poisoning to drive traffic to malicious sites.

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://nursingarmpillow.com/uploads/1/3/0/8/130814805/130814805.html#meditations+marcus+aurelius+pdf+reddit
    • http://southworthconstruction.com/uploads/1/3/0/3/130379266/lofojo.pdf
    • http://cookiecrumbsandcompany.com/uploads/1/3/1/4/131483662/femaduw.pdf
    • http://scsc.info/uploads/1/3/0/6/130604011/8366886.pdf
    • http://gsocounselingpartners.com/uploads/1/3/0/7/130776298/wisuregemewirode.pdf
    • http://didiergirauldon.com/uploads/1/3/0/6/130639398/dasexinidewugo.pdf
    • http://itdirectorsclub.com/uploads/1/3/0/4/130475997/90ec8379.pdf
    • http://storyweaverstudio.com/uploads/1/3/0/4/130483670/509ec369b7e.pdf
    • http://kaleostudents.org/uploads/1/3/1/3/131381614/e8b8282.pdf
    • http://halfpricecases.com/uploads/1/3/0/5/130588745/8e285.pdf
    • http://thefashionablefarmgirl.com/uploads/1/3/0/4/130492441/a38cf.pdf
    • http://calhounheritagep.com/uploads/1/3/1/3/131381769/zeruzabuvabubatan.pdf
    • http://rentayak.com/uploads/1/3/0/4/130488295/d136fb49.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_off0000654d.bin
706e43619a097876da6f7ba65094c2e35cb5143d4074e002188764889bd759f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654D 7912 bytes

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