Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44d40b50fb56459…

MALICIOUS

PDF

46.0 KB Created: 2020-04-05 16:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 027dbf9f985f74271e858c283ff0db63 SHA-1: 4c3df398fd831fd7b470ab520bc72369bdea2560 SHA-256: f44d40b50fb5645936c601b1168ff79bf6e2e58e0121df72cbd26b295c60ae51
92 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Stage Capabilities: Gather Victim Identity Information T1204 User Execution: Malicious Link

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains a URL that points to a collection of other PDF files. This suggests a link farm or SEO manipulation tactic, likely intended to direct users to potentially malicious content hosted on numerous domains.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://lucaslandscapes.net/uploads/1/3/0/5/130545666/130545666.html#operacionalizaci%C3%B3n+de+variables+de+investigacion+ejemplos
    • http://brycenurding.com/uploads/1/3/0/4/130477074/bca874f952.pdf
    • http://healthyheartsforhiphop.com/uploads/1/3/0/6/130605443/xojigebixaram.pdf
    • http://paylesshomeloans.com/uploads/1/3/1/3/131380004/miruvonages-vunew.pdf
    • http://alllivemedia123.com/uploads/1/3/0/2/130271085/2cc1834542da.pdf
    • http://universalhomeconstruction.com/uploads/1/3/0/5/130590558/tuwefarokurevo.pdf
    • http://mountainzonewaterpolo.com/uploads/1/3/1/3/131398591/cdaba749b1.pdf
    • http://yanjuncai.com/uploads/1/3/0/7/130775672/5302088.pdf
    • http://coachangelascott.org/uploads/1/3/0/6/130621124/sigakaveralubud.pdf
    • http://designsbywebster.com/uploads/1/3/0/5/130545882/jalotepuve.pdf
    • http://ninjawarriortrainingoz.com/uploads/1/3/1/1/131163935/waxevitebas.pdf
    • http://avamgarde.com/uploads/1/3/0/4/130489019/niziv.pdf
    • http://sacredpeaceministries.com/uploads/1/3/0/3/130379311/rogilojudojafirufon.pdf
    • http://marketingtechtest2.com/uploads/1/3/0/7/130740442/xupowipovut.pdf
    • http://teacheslkoreablog.com/uploads/1/3/1/0/131071019/6466802.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_off0000884d.bin
f76342bd18a1b90422be2a721730b38b92460e327a0dbf41dd446349e95fa6e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x884D 8672 bytes

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