Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fa4d33109481939…

MALICIOUS

PDF

36.2 KB Created: 2020-03-23 01:58:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8fdfdcf7b41a0e59240007c28bb774f8 SHA-1: 9cdad1fe77e148f72ba764121893e7043151d0a8 SHA-256: 7fa4d331094819391236b5cce9e914b479549d326dd67c43d2aa6cff2b58b88a
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The document body mentions "Ley de la muerte digna en argentina" which appears to be a lure to attract clicks to the numerous linked PDFs hosted on various domains. No scripts were extracted, and the primary malicious activity observed is the extensive linking to potentially harmful external resources.

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://navice.org/uploads/1/3/0/5/130590678/130590678.html#ley+de+la+muerte+digna+en+argentina
    • http://boujeegirl.net/uploads/1/3/0/6/130640164/4789adc71dbd50f.pdf
    • http://buyphilproperties.com/uploads/1/3/0/5/130590474/8796563.pdf
    • http://haitichristianeducationfund.com/uploads/1/3/0/2/130270958/c5d671.pdf
    • http://streatfoodapp.com/uploads/1/3/0/2/130288775/570127.pdf
    • http://bestjoomlatemplates.com/uploads/1/3/0/8/130874266/rajeb.pdf
    • http://publishinginsideout.org/uploads/1/3/0/9/130969231/b3fee3e51dc0388.pdf
    • http://davebecker.org/uploads/1/3/0/5/130550714/wimiziz.pdf
    • http://eagletaxflorence.com/uploads/1/3/0/3/130379431/monemebu-zadubuw-bufasi.pdf
    • http://nongress.org/uploads/1/3/0/3/130379354/4945206.pdf
    • http://naturalisllc.net/uploads/1/3/0/4/130483614/tezufajejim.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_off000063dd.bin
e0e08c3bc8b8fafca682b0df5ce3c102424096387c24e965cb7bd1002738967c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63DD 8292 bytes

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