Malicious PDF — malware analysis report

Static analysis result for SHA-256 71f53f222d22e9da…

MALICIOUS

PDF

48.7 KB Created: 2020-03-24 22:10:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2aad1514bdf9dcb7477b3625baaa8477 SHA-1: e5ccdd948bb9c9dbe9993fa4c9fd8083b713c3c6 SHA-256: 71f53f222d22e9da6a9f2d0b7678f4265b78816ddbd86800b0ae846dc8769c92
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links likely serve to direct users to malicious websites or to manipulate search engine rankings. While no scripts were explicitly extracted, the presence of numerous external URLs suggests an attempt to lead the user away from the current document to a potentially harmful destination, possibly involving JavaScript execution on the linked pages.

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://purerockcolours.eu/uploads/1/3/0/2/130272361/130272361.html#cressi+giotto+wrist+computer+review
    • http://www.originszoological.org/uploads/1/3/0/6/130604361/560cc6dbb3a.pdf
    • http://mariapressentin.com/uploads/1/3/0/7/130739349/venaxixewobir.pdf
    • http://www.cardcardgroup.com/uploads/1/3/0/9/130969441/botidolisiloki.pdf
    • http://mooiedecoraties.com/uploads/1/3/0/3/130313590/wutoja-vesupifofosokaz.pdf
    • http://www.skinandbodyklinicshop.com/uploads/1/3/0/6/130620668/tikotuluwo.pdf
    • http://dbradshawonline.com/uploads/1/3/0/7/130738738/xediwiwo.pdf
    • http://caninecreationsbykk.com/uploads/1/3/0/6/130605118/53282.pdf
    • http://moneytipmonday.com/uploads/1/3/0/5/130589328/e87a790fde9be8.pdf
    • http://clogdancing.me/uploads/1/3/0/7/130776888/seruku-kujozaxulu-guzif-zagudujotoki.pdf
    • http://www.kolenhandelpillen.be/uploads/1/3/0/5/130550974/vabozegut-fitebopu-xeseziligija.pdf
    • http://gcadassociates.com/uploads/1/3/0/2/130273987/3113045.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008bf5.bin
96156c057e5d33d899948f652dd056b75680285ff1dfff94eb7a530d2489288a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF5 8620 bytes
font_01_sfnt_off0000ac05.bin
2c32c498f23db3cae400dac070c72b38d41a5d5dbe5041cbe08e7cee44e1acfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC05 2648 bytes

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