Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e47cfc5aa92d883…

MALICIOUS

PDF

32.8 KB Created: 2020-05-02 11:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 81c4b50dcb5d5bdadf3724a63ccc7fb5 SHA-1: 368a85a436af0254e037850be6d38ecbc4c048ed SHA-256: 7e47cfc5aa92d8832bcd93e0686137c8c981e18edbb6d06a84c24099c9a4b5e2
62 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 User Execution

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting the ability to determine a more specific attack pattern or family. The primary IOCs are the numerous external URLs embedded within the document.

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://handwsports.net/uploads/1/3/0/4/130483117/130483117.html#first+conditional+worksheet+islcollective
    • http://professionallndustrislteam.com/uploads/1/3/0/7/130776518/nakizapinob.pdf
    • http://falconfoodmart.com/uploads/1/3/0/5/130590475/wulek.pdf
    • http://mindbodypdx.com/uploads/1/3/0/6/130639365/juluwo.pdf
    • http://bamfieldmercantile.com/uploads/1/3/0/7/130775115/regewiwuzatidejuxiru.pdf
    • http://carter.ventures/uploads/1/3/1/3/131382539/bogomefosuxatod.pdf
    • http://tanziscleaners.com/uploads/1/3/1/4/131437689/zuxoxesesawo.pdf
    • http://fakartstore.net/uploads/1/3/0/5/130547576/7796480.pdf
    • http://santachase5k.org/uploads/1/3/0/8/130813364/e1cb1c13e.pdf
    • http://silverarrowdetailing.com/uploads/1/3/1/3/131379194/litaf.pdf
    • http://voloeboards.com/uploads/1/3/1/6/131606631/308828.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_off000059aa.bin
337384d1d7cc4d472fe3665000306c8e5eeab184adee357e2671447bc4494a83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59AA 7884 bytes

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