Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb8c0f7101e976e…

MALICIOUS

PDF

39.4 KB Created: 2020-03-30 08:17:40 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 742895875a3859852e19f9d278771988 SHA-1: cde84f517fa86b1915a60afa7db92efcbf651a23 SHA-256: 6fb8c0f7101e976ee791b75ba916808229e235bde511695b31f4656da5806a2e
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified as a PDF link farm. The document body, though partially corrupted, contains a title suggesting astrological alignment and references the wkhtmltopdf tool, indicating it was likely generated programmatically. The primary function appears to be redirecting users to a multitude of external URLs, which are likely malicious or used for SEO spam.

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://neokundalini.org/uploads/1/3/1/4/131453188/131453188.html#los+planetas+se+alinean+a+mi+favor
    • http://halloween5k.co.uk/uploads/1/3/0/7/130740596/pupina_wojip_xojilebix_jagozo.pdf
    • http://myartonanything.com/uploads/1/3/0/5/130590436/pasazabo-jizipegugu.pdf
    • http://prospectperception.com/uploads/1/3/0/6/130605521/082da4a603.pdf
    • http://revolutionaryimprints.com/uploads/1/3/0/5/130588895/bolisabagozegadadiba.pdf
    • http://jinhui-mechanics.com/uploads/1/3/0/3/130323260/dc19522474236.pdf
    • http://joinhomefrontrealty.com/uploads/1/3/0/6/130640095/wovawofawipogimejik.pdf
    • http://covenanthealthcareservices.com/uploads/1/3/0/5/130539344/e36f81102e70381.pdf
    • http://packungs-design.com/uploads/1/3/0/3/130323515/9491337.pdf
    • http://nationals2020.com/uploads/1/3/0/5/130551142/92e41d1e1.pdf
    • http://sweup.xyz/uploads/1/3/0/8/130873895/boralawe.pdf
    • http://mowriteindustrial.com/uploads/1/3/1/3/131382274/fumugamurimawu-vufuxujagigitax.pdf
    • http://patricia-martinez.com/uploads/1/3/0/9/130969580/5dd3a9301b5a.pdf
    • http://utahleadmagnet.com/uploads/1/3/0/6/130639958/8846963.pdf
    • http://explorebedale.com/uploads/1/3/1/4/131438150/7938776.pdf
    • http://allbyg.com/uploads/1/3/0/5/130550887/fd051002.pdf
    • http://halohaloevents.com/uploads/1/3/0/4/130476171/juwise.pdf
    • http://themobileprime.com/uploads/1/3/0/5/130545565/zobigoriw.pdf
    • http://cosignasap.com/uploads/1/3/0/5/130589042/7172632.pdf
    • http://harmonyart.org/uploads/1/3/0/6/130620763/gisegatoxotow-fufevojog.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_off00006f6c.bin
8a409b546dd51fa6d523e5f4d7077b89308ae57579836b140bff6238f3662bad
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6C 8668 bytes