Malicious PDF — malware analysis report

Static analysis result for SHA-256 f775f1109fe31ad8…

MALICIOUS

PDF

35.7 KB Created: 2020-04-07 20:28:41 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f87c1a22a02d6b8f5b94a1e5f0b31ab8 SHA-1: c4acff79757223018d67b7232e364db0b24a6551 SHA-256: f775f1109fe31ad89d6401368eba493668ced1d4d60f57484b6856ee8004aec2
70 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files on unrelated domains. This pattern is indicative of a link farm or a phishing lure designed to direct users to malicious content. The presence of a 'download button' heuristic further supports the idea that the document is intended to trick users into downloading or accessing harmful files. No scripts were extracted, limiting the analysis of direct payload execution.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://foothillsbiblefellowship.com/uploads/1/3/0/7/130739522/130739522.html#vehicle+maintenance+checklist+free
    • http://houstonenergysoccer.com/uploads/1/3/0/5/130547689/3185267.pdf
    • http://spirittouch.info/uploads/1/3/1/0/131071309/kepoxiloxisokovuk.pdf
    • http://bloggrupoclisa.com/uploads/1/3/0/6/130604180/7419971.pdf
    • http://dollyrockfarm.com/uploads/1/3/1/0/131070829/16539efd45e4f9a.pdf
    • http://katielyonpingree.org/uploads/1/3/1/4/131453247/7916186.pdf
    • http://doublehaulmt.com/uploads/1/3/1/4/131454770/kizogut.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_off00006383.bin
5c56bd842036af29b6a3528f5b3f6b01e6e56a39935d6d1fc646f0159e422be7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6383 7436 bytes