Malicious PDF — malware analysis report

Static analysis result for SHA-256 020964e650271d78…

MALICIOUS

PDF

40.3 KB Created: 2020-04-11 04:25:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1094600cfa8aabd791fc61c644885b3d SHA-1: aba1f69e8d26014d213294af49cc1025b43a86c1 SHA-256: 020964e650271d7881747cc13f5e6918c2fc4ace05a8b7fa16389d0e79212b73
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, indicating a link farm or redirection scheme designed to lead users to malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent. The document body's reference to "Tylenol suppository dosing" is likely a lure to disguise the malicious nature of the links.

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://74-123-77-252.mgwnet.com/uploads/1/3/1/4/131454916/131454916.html#tylenol+suppository+dosing
    • http://thenycwiz.com/uploads/1/3/1/4/131438086/47482dd22.pdf
    • http://davisproductdesign.com/uploads/1/3/0/4/130483248/fifinurav-zowetit-xuxumibiwodiwaf.pdf
    • http://epiclifestylemanagement.com/uploads/1/3/0/7/130739791/4548198.pdf
    • http://karen-odell.com/uploads/1/3/0/2/130287514/9f0d43f1.pdf
    • http://fancynancyshousecleaning.com/uploads/1/3/0/2/130270742/jatuzeriwetarudas.pdf
    • http://karascompetitivek9s.com/uploads/1/3/0/4/130436272/133509.pdf
    • http://jeannielynch.org/uploads/1/3/1/3/131381021/dumipepoxik-xosisudaji-gejorifom.pdf
    • http://mylistfix.com/uploads/1/3/1/3/131398286/5153182.pdf
    • http://curvybridesma.com/uploads/1/3/0/2/130272482/bisaxumokakilapejal.pdf
    • http://behaveaid.com/uploads/1/3/0/6/130603769/3eb81c.pdf
    • http://mindregard.com/uploads/1/3/1/4/131453946/7929349.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_off0000760b.bin
dce64571ed3d0d13fbe42b0dd27ad6d39825f702c614437785151855be84da7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x760B 8136 bytes

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