Malicious PDF — malware analysis report

Static analysis result for SHA-256 41a4696c6e804428…

MALICIOUS

PDF

47.0 KB Created: 2020-06-06 15:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af4e8dafb05c8b69da92addb8dbee54b SHA-1: d6559e0467ed70018a43a28a69fccd2654cd052b SHA-256: 41a4696c6e80442822a035d5441715833140d1eb2b67762d07c7507fd08a5a14
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains references to these URLs. The primary function appears to be directing users to a multitude of other PDF documents hosted across various domains, suggesting a link farm or a distribution mechanism for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://harrisonrappaport.com/uploads/1/3/1/4/131406741/131406741.html#here+with+me+marshmello+feat.+chvrch
    • http://imperioemprendedores.com/uploads/1/3/1/6/131607662/talomikujiranop-rijuladevibibe.pdf
    • http://susanwnuk.ca/uploads/1/3/1/4/131406068/6965207.pdf
    • http://spdcpa.ca/uploads/1/3/0/6/130620716/rejuvegefamipagide.pdf
    • http://newportplant.com/uploads/1/3/0/8/130813834/kemabexuxuvafelowaxu.pdf
    • http://kylielyall.com/uploads/1/3/0/6/130604459/2510849.pdf
    • http://comicatcreations.com/uploads/1/3/1/4/131407278/rovafox_woxunajifep_vutadax_wosakuxip.pdf
    • http://harrisonrappaport.com/uploads/1/3/1/4/131406741/terms.html
    • http://harrisonrappaport.com/uploads/1/3/1/4/131406741/dmca.html
    • http://harrisonrappaport.com/uploads/1/3/1/4/131406741/policy.html
    • https://nudademexu.files.wordpress.com/2020/06/78055835010.pdf
    • https://ganesesuf.files.wordpress.com/2020/06/3090742342.pdf
    • https://wamobujopo.files.wordpress.com/2020/06/37496010122.pdf
    • https://dametox.files.wordpress.com/2020/06/16890369201.pdf
    • https://fojajuxebi.files.wordpress.com/2020/06/39755486245.pdf
    • https://daguxazogas.files.wordpress.com/2020/06/retixotitasawom.pdf
    • https://mazewakipu.files.wordpress.com/2020/06/lizuzukisefofakonu.pdf
    • https://buvesapunuso.files.wordpress.com/2020/06/pomuwumajotilixiwajawidel.pdf
    • https://muxetapotima.files.wordpress.com/2020/06/nawofukejagudowif.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_off00007d66.bin
18b01a0c27bf6d497091ac58460287fd809854ea90660e2f99179338a90ba34c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D66 16908 bytes

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