Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d75ffc0ecc8c2d…

MALICIOUS

PDF

36.9 KB Created: 2020-03-29 02:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: dd0b738d751be8a106a0e095f8a1a77c SHA-1: fac3dd2847d9a8b04d586984af83fde218baa5a0 SHA-256: 80d75ffc0ecc8c2da6e99d1c8a5f5cf0565bd73960bee1b56f792db352450cf1
94 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, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, contains references to these links, including the URL http://edgelandscapeandmaintenance.com/uploads/1/3/0/6/130620948/130620948.html#peticiones+misa+ni%C3%B1os+de+primera+comunion. The primary function appears to be directing users to a network of malicious or spam-related websites, likely for SEO manipulation or to host further malicious content.

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://edgelandscapeandmaintenance.com/uploads/1/3/0/6/130620948/130620948.html#peticiones+misa+ni%C3%B1os+de+primera+comunion
    • http://worktchopconsulting.com/uploads/1/3/0/6/130639966/fumimev_gevazefirikafe.pdf
    • http://aosperspectives.com/uploads/1/3/0/2/130289214/de613.pdf
    • http://immcitlaw.com/uploads/1/3/0/5/130546076/bd88d9.pdf
    • http://mta-sts.secondaryschool.ms/uploads/1/3/0/4/130478295/f2c8b6c8400f76c.pdf
    • http://sdenkalt.store/uploads/1/3/0/4/130479435/xafemisosam.pdf
    • http://steve-mcclanahan.com/uploads/1/3/0/4/130478819/xitererikerez_kedoxagimuvati.pdf
    • http://flagstaffsings.org/uploads/1/3/0/6/130605016/zovodefukagube.pdf
    • http://nowhiringheroes.net/uploads/1/3/0/2/130273798/zepewunaz.pdf
    • http://cityestateagent.com/uploads/1/3/0/6/130621607/wiluxejexejur.pdf
    • http://mta-sts.changingwaves.net/uploads/1/3/0/6/130621119/kubatosapuv_bazumiva.pdf
    • http://mrsbhatt.com/uploads/1/3/0/6/130639368/5228404.pdf
    • http://suziebrews.com/uploads/1/3/0/5/130543488/kasomelazogikuw_jumakisaluvuk.pdf
    • http://extrabuildingmaterials.com/uploads/1/3/0/4/130483879/01c96c1a.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_off000067db.bin
d7c0d66f30d5e6b3c6adb1ea30e070c19b0d740245a58b7ca5e80cb3cc08b506		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67DB 7720 bytes

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