Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3aa4495336fab1a…

MALICIOUS

PDF

34.2 KB Created: 2020-04-30 07:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8033f66aa0a42a5cf73dd273f17c55f5 SHA-1: 6c2d1d999e3741772ca8524b55656342c41e528e SHA-256: d3aa4495336fab1a9a4bb193bb545cbcd2f49627864b9bc0bb76747da00e4231
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, many of which point to other PDF files with numeric slugs, indicating a link farm or SEO spam tactic. One of the embedded URLs, http://freetocompete-tx.org/uploads/1/3/0/7/130776110/130776110.html#mitosis+vs+meiosis+worksheet+and+answers, is presented as educational content. The primary heuristic firing, PDF_SEO_LINK_FARM, strongly suggests this is a malicious attempt to manipulate search engine results or redirect users to potentially harmful 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://freetocompete-tx.org/uploads/1/3/0/7/130776110/130776110.html#mitosis+vs+meiosis+worksheet+and+answers
    • http://pakalolochocolate.com/uploads/1/3/0/2/130287894/f7d9f.pdf
    • http://rightcopycopywriters.com/uploads/1/3/0/8/130814513/getogepef-kesofumo.pdf
    • http://megaxpansion.com/uploads/1/3/1/0/131070302/1449867.pdf
    • http://weshaskellmusic.com/uploads/1/3/1/3/131398555/wevoladegirolosu.pdf
    • http://theemperorspa.com/uploads/1/3/0/4/130483397/2297996.pdf
    • http://smpaintingmaine.com/uploads/1/3/1/8/131871970/papifaxizurisagelug.pdf
    • http://americansocialism.us/uploads/1/3/0/9/130969407/6547806.pdf
    • http://beachwarehouseliquidation.com/uploads/1/3/0/4/130476657/a58abd29d515e84.pdf
    • http://gracefuldiva.com/uploads/1/3/0/8/130873804/7805316.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_off00005e3c.bin
3806b1a40f0c0dc6906fcbd3b794156ba323619e6330e29b932bf6215db7cc8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3C 7864 bytes

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