Malicious PDF — malware analysis report

Static analysis result for SHA-256 e737ed2566cdc4db…

MALICIOUS

PDF

35.2 KB Created: 2020-04-10 05:19:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 43f5fcdbd9b482e10181c7b2b71a708a SHA-1: e35050d400ca4a9d7395b87a3b68ef21e03969fc SHA-256: e737ed2566cdc4db3d8496ca093f3e46516b819b7a8bd6c592b05a77f51e7605
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or distribution network. The document body itself is heavily obfuscated and contains some of these URLs, but does not provide a clear narrative beyond the technical details of its creation. No scripts were extracted from this sample.

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://mysaphi.com/uploads/1/3/0/6/130620966/130620966.html#poligonos+definicion+clasificacion+y+propiedades
    • http://frorealblogger.com/uploads/1/3/1/4/131407815/xobereg-nekixunaka-vafotuwiseve-mimekopa.pdf
    • http://esaletterdoctor.com/uploads/1/3/0/2/130270897/lixebaferalegux_pujunuxesol_remori_ninajilejo.pdf
    • http://jdsalazarproductions.com/uploads/1/3/0/4/130489052/gipexilono_tamuman_redisovubuje.pdf
    • http://robertmaxey.com/uploads/1/3/0/3/130379447/512ef8.pdf
    • http://termaisdinheiro.com/uploads/1/3/0/6/130639285/3388942.pdf
    • http://longhorncaverns.info/uploads/1/3/0/8/130873791/nafotevidij.pdf
    • http://covmedrecruiting.com/uploads/1/3/1/1/131164460/3eabbadb7af8fdb.pdf
    • http://dustydoorandgate.com/uploads/1/3/1/3/131382226/4724388.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_off00005f9a.bin
92c0d19f8e1a37489f00b38e6b0aa27383ca428733acfc7730c0480895769d4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9A 8364 bytes

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