Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea54d7bcde30959…

MALICIOUS

PDF

40.4 KB Created: 2020-04-23 02:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4c92a181f2ba49bb632879c6b71e4364 SHA-1: b0ee62846640fe8eebf8f961c8453fbdf7d8be91 SHA-256: 8ea54d7bcde30959dbe654fda9a517caeb358dd320b65fa7097e7da630e07fff
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO spam campaign, likely intended to drive traffic or distribute malicious content. The primary heuristic identified a link farm structure, and multiple external URLs were extracted, supporting this assessment. No scripts were extracted from this sample.

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://landscapingkings.com/uploads/1/3/0/3/130323522/130323522.html#5th+grade+language+arts+online+worksheets
    • http://localcolortours.com/uploads/1/3/0/5/130551823/6afdd5.pdf
    • http://rushbunny.com/uploads/1/3/0/5/130589362/8464364.pdf
    • http://shadowscribe.net/uploads/1/3/0/7/130739602/furukejogawav.pdf
    • http://looseconnections.org/uploads/1/3/0/6/130604617/xugoxoda.pdf
    • http://mybetterlife.shop/uploads/1/3/0/2/130287504/8148034.pdf
    • http://enjoyshaving.com/uploads/1/3/0/6/130605212/nadanu-xijunip-vadimi-jodozezibajawe.pdf
    • http://dehempify.com/uploads/1/3/1/4/131452947/nutazozetib_vejupetaremi.pdf
    • http://floridaorchestramusicians.com/uploads/1/3/0/4/130489742/1442146.pdf
    • http://blueisleboutique.com/uploads/1/3/0/3/130379841/fimebon.pdf
    • http://sunshinelifecoaching.org/uploads/1/3/0/4/130477201/mukadotu-lekokibat.pdf
    • http://enjoyshaving.com/uploads/1/3/0/6/130605212/nadanu
    • 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_off000076a5.bin
738a87ee888f82f6b23580729dddf014a824c17a884f02b7a0dc1cfabbbd40d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A5 7976 bytes

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