Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe434ffc7fb7265e…

MALICIOUS

PDF

66.5 KB Created: 2020-04-05 05:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 886cbcc55ad905a673689b25956c46e8 SHA-1: d4775cccb6b3f7d1f4f67ba4c44b07b6e646e401 SHA-256: fe434ffc7fb7265efa6ecd3eebe0681d48ce4f6f4482856f0584325ee013bb51
96 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or content distribution network. The document body contains garbled text and some of the extracted URLs, indicating a potential attempt to manipulate search engine results or distribute further malicious content. No scripts were extracted from this sample.

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://usseawolf.com/uploads/1/3/0/6/130620622/130620622.html#forma+de+escritura+del+barroco PDF link annotation
    • http://caseyajoyce.com/uploads/1/3/0/5/130551654/ralofuti-virilobologoxas-davuvip.pdfIn PDF document text
    • http://teptu.com/uploads/1/3/0/5/130590698/1cb39fa5.pdfIn PDF document text
    • http://northwalestimberframes.com/uploads/1/3/0/4/130476896/bikodusoturinam_kajurusiwaliwan_ximasefid_lesipike.pdfIn PDF document text
    • http://h2gzenergizing.com/uploads/1/3/0/6/130620888/3363305.pdfIn PDF document text
    • http://themagictophat.com/uploads/1/3/0/8/130874600/rojetepesefokakapez.pdfIn PDF document text
    • http://skidayz.co/uploads/1/3/0/3/130313193/zetobo.pdfIn PDF document text
    • http://topekapersonaltraining.com/uploads/1/3/0/5/130548108/xuxojoxikitu.pdfIn PDF document text
    • http://mellifluousencapsulation.com/uploads/1/3/1/4/131406751/53e0a22a2e345.pdfIn PDF document text
    • http://alexkds.com/uploads/1/3/1/1/131163599/a78bd25bcf9c9b.pdfIn PDF document text
    • http://lens.fi/uploads/1/3/0/6/130603926/c9e6a452.pdfIn PDF document text
    • http://trueyouarttherapy.com/uploads/1/3/0/8/130813077/b7c9e2728f9a31.pdfIn PDF document text
    • http://hostmaster.barcelona-museum.de/uploads/1/3/0/8/130874474/gesep.pdfIn PDF document text
    • http://oroconsulting.com/uploads/1/3/0/2/130288317/givesuto.pdfIn PDF document text
    • http://monarchacquisition.com/uploads/1/3/0/5/130551599/8e040fd17be375.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c47d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC47D 9100 bytes
SHA-256: e01f301ee82706f0e64149efe0761f8e5fb3955de44abdbd63c804ea65e281ef
font_01_sfnt_off0000e4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E9 16204 bytes
SHA-256: ea417f312ceafae881238b12dc4d7f671a0b131b0f52ef10cb53af572bc5bbb2

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