Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee7c78ddc8ea02dc…

MALICIOUS

PDF

39.5 KB Created: 2020-04-08 13:15:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1201b3853643275bacbfba8581de5458 SHA-1: 44bd65c163a35fbe0c29fe3a4b586701a5c5fa95 SHA-256: ee7c78ddc8ea02dcbce392d9aa06019ae4f26412c521a354fd5329b6b84bc6ac
94 Risk Score

Malware Insights

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

The PDF document was flagged by an ML classifier as malicious. It contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to create a link farm for SEO manipulation or to distribute malicious content. The primary attack pattern involves leveraging these numerous external links to redirect users to potentially harmful websites.

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://northshoreplaytherapy.com/uploads/1/3/0/6/130639895/130639895.html#ammonium+iron%28iii%29+sulfate+dodecahydrate+msds+merck
    • http://worldmaco.com/uploads/1/3/0/4/130483494/8663e9a42eb.pdf
    • http://myborrowedtime.com/uploads/1/3/0/5/130589020/mibumap-tuzokopuxale-kunop.pdf
    • http://wetowgilbert.com/uploads/1/3/0/7/130776307/e3f71e44401.pdf
    • http://yourplaceinparadise.com/uploads/1/3/0/4/130436154/xijajojodepex.pdf
    • http://patriotcurrencyexchange.com/uploads/1/3/0/6/130621203/novexivil.pdf
    • http://tomlawsonartist.com/uploads/1/3/0/3/130323488/1822555.pdf
    • http://purgatoirevalleyfoundation.org/uploads/1/3/0/8/130814100/vafunemefepun.pdf
    • http://mmmooi.com/uploads/1/3/0/2/130273791/8304737e424c.pdf
    • http://campbelltownfc.org/uploads/1/3/0/2/130272477/7283118.pdf
    • http://fatdotmedia.com/uploads/1/3/0/5/130588463/juren-xozapex-lawoni.pdf
    • http://ohmyblingpaparazzijewelry.com/uploads/1/3/0/6/130604081/mazukidumunolu.pdf
    • http://rhsgirlsbasketball.com/uploads/1/3/1/4/131438137/pedexufapamirot.pdf
    • http://backonyourfeetmassage.com/uploads/1/3/0/5/130551714/xigijotizemowof_misezevuna_gejilunoxopuxa.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_off00006c6c.bin
ec21858ccd1d2eeee8d0b65105ab86fbe3ea73a2d29bc3b2f6943d82340112f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6C 9288 bytes

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