Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea5460022d23bd4e…

MALICIOUS

PDF

37.1 KB Created: 2020-03-24 15:52:22 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f226630480fcd4376033b5f6ec214e81 SHA-1: c1ee7d2e8d5ff33472ef24577917aadb0085ddf8 SHA-256: ea5460022d23bd4e1d46f52cf406a41c9d495bcf0cf882167af1f44b35151c8a
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The document body contains a reference to 'Test de arbol y casa' and the primary URL, suggesting a lure. The numerous links point to various PDF files on different domains, indicating a likely attempt to distribute malicious content or manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://entrepreneurssuccessformula.com/uploads/1/3/0/7/130740566/130740566.html#test+de+arbol+y+casa
    • http://skicave.com/uploads/1/3/0/6/130621583/kagufetiferimux.pdf
    • http://madotz32.net/uploads/1/3/0/6/130621460/zewusamu_puxagi_dutapelib.pdf
    • http://cottagewoodworkers.ca/uploads/1/3/0/7/130738513/gadawugep-babukofeda.pdf
    • http://www.yeqaqewerdiwot.org/uploads/1/3/0/4/130489175/guluwaxatex-lipulatides-legam.pdf
    • http://my-zero-stress.com/uploads/1/3/0/2/130289793/sasun-nokabukim.pdf
    • http://business.berkeleychamber.com/uploads/1/3/0/6/130621620/fekogek-xagojifiv.pdf
    • http://energyasmedicine.com/uploads/1/3/0/2/130270745/dukubidiwijavan-bajepuvetexaxa-tofikufeta.pdf
    • http://fourseasonsenterprise.net/uploads/1/3/0/2/130289676/refapubum-mefanobi-kefowajut.pdf
    • http://webdisk.trvea.org/uploads/1/3/0/6/130604589/romojonubame.pdf
    • http://classichomeinspections.net/uploads/1/3/0/6/130605452/03fedc.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_off00006894.bin
119657c85b9776e49bd9d1c9f2e22e61cfc844b01908df574503ce1c0c8d7f16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6894 8160 bytes

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