Malicious PDF — malware analysis report

Static analysis result for SHA-256 69dcc5bc0626eb0f…

MALICIOUS

PDF

37.9 KB Created: 2020-04-05 14:00:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3ad6a9da85e65884dc6dd824c0bfbd8b SHA-1: 58edb2ac20628eff34d28c9dabfa264966b91300 SHA-256: 69dcc5bc0626eb0f9eb76673d4e0491ca3ba64d3d3fa93a40aef1512f3f8df6c
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm. The document body itself is largely unreadable, but the presence of numerous URLs points to a malicious intent to direct users to external resources.

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://tjfitness.net/uploads/1/3/0/4/130483219/130483219.html#etica+y+moral+psicologia+y+mente
    • http://thequalityauditor.com/uploads/1/3/0/2/130272474/waduxijogixudotusaf.pdf
    • http://specialtynailwholesale.com/uploads/1/3/0/5/130550723/55bfc6d.pdf
    • http://becky4beavertonschools.com/uploads/1/3/0/6/130639162/3345203.pdf
    • http://laplatagardenclub.org/uploads/1/3/0/8/130813757/xedebujen-bazixupabe.pdf
    • http://debbiefecher.com/uploads/1/3/0/7/130738975/5967239.pdf
    • http://epichomehealth.net/uploads/1/3/0/7/130739885/pozurupi.pdf
    • http://26dos.com/uploads/1/3/0/8/130874544/997131e9f.pdf
    • http://nolatesting.com/uploads/1/3/1/1/131164077/6277702.pdf
    • http://jroperlaw.com/uploads/1/3/0/8/130874683/4937329.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_off00006956.bin
fddd0845fb70cc56c5429ab61c13826cae82ef515ef0b009234134a645e87c41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6956 8784 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.