Malicious PDF — malware analysis report

Static analysis result for SHA-256 477ee9992a803f21…

MALICIOUS

PDF

44.1 KB Created: 2020-03-24 22:04:58 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4a9c6120a0591ab665742ea48037ca0c SHA-1: d71a1142d70e5f295afae36d21e79152d6985a74 SHA-256: 477ee9992a803f21add50f5e5572b2278b57b88fe62f38aad902344299ad25a9
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, each hosting PDF files with numeric or descriptive slugs. The document body, though partially corrupted, contains a title related to ecosystems and mentions the authoring application, suggesting a lure. The primary attack pattern involves redirecting users to a vast network of linked PDFs, likely for SEO poisoning or to serve malicious payloads.

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://julianthology.com/uploads/1/3/0/6/130604935/130604935.html#componentes+estructurales+y+funcionales+de+un+ecosistema
    • http://chaosincoos.com/uploads/1/3/0/7/130775294/1368269.pdf
    • http://kuponyaarts.com/uploads/1/3/0/5/130539336/wenebepaji.pdf
    • http://aufuturclothing.com/uploads/1/3/0/6/130604220/dikufux-pasatixazujile-pujudo-dabonaperowig.pdf
    • http://instantarabic.com/uploads/1/3/0/4/130478203/3122683.pdf
    • http://skatestoyou.com/uploads/1/3/0/6/130621413/5799313.pdf
    • http://everlyconsulting.org/uploads/1/3/0/7/130776738/dumug.pdf
    • http://roberttalksbusiness.com/uploads/1/3/0/2/130287735/rufoge.pdf
    • http://gold-etf-losses.com/uploads/1/3/0/4/130488584/materarow.pdf
    • http://jewelssjourney.com/uploads/1/3/0/6/130620536/xikejixuv-mexebesap-xaxojaluvevor-zirunilovese.pdf
    • http://talentmundo.com/uploads/1/3/0/5/130539085/gifedopanej.pdf
    • http://chloe-communications.com/uploads/1/3/0/7/130776599/6121762.pdf
    • http://allnaturalowl.com/uploads/1/3/0/2/130273573/dunejawezujidumu.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_off0000847f.bin
9cd6189e689b5756b7a77fbcfeeade6a546bb9cf49ccf7d78860835fad64d302		 pdf-font-stream PDF embedded font (sfnt) at offset 0x847F 8408 bytes

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