Malicious PDF — malware analysis report

Static analysis result for SHA-256 f84a3323a1d5c7f0…

MALICIOUS

PDF

43.8 KB Created: 2020-03-07 14:38:36 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 88bef91a955c94abe3c5ca2d3624f857 SHA-1: bf4badbfc0274b82815b3c98296ce0c3b3dabfb3 SHA-256: f84a3323a1d5c7f0cf1096369f2e717a7dd77e3a1d8fee52311fe33f9db73e1d
96 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 to various domains, indicating a link farm or SEO poisoning attempt. The document body, though partially corrupted, contains references to 'abaqus cae documentation 6.13' and 'wkhtmltopdf', suggesting a lure for technical documentation. The primary attack pattern involves directing users to a multitude of PDF files hosted across different subdomains, likely to distribute malware or engage in phishing.

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://kids.ladse.org/uploads/1/3/0/4/130483275/130483275.html#abaqus+cae+documentation+6.13 PDF link annotation
    • http://quillicus.com/uploads/1/3/0/6/130620887/c2b30bbb7.pdfIn PDF document text
    • http://jmbproducts.com/uploads/1/3/0/5/130542991/mapuxozo.pdfIn PDF document text
    • http://teaching-philosophy-be-amazing.com/uploads/1/3/0/6/130604699/a75dcbb4da47ef8.pdfIn PDF document text
    • http://muziksingapore.com/uploads/1/3/0/7/130776673/nuwelulowu.pdfIn PDF document text
    • http://okpins.net/uploads/1/3/0/2/130288431/5949659.pdfIn PDF document text
    • http://doicontrol.com/uploads/1/3/0/6/130620767/gazugeviza-jajulibigege-fuzuvuja-lokobezekutimu.pdfIn PDF document text
    • http://babylon5cards.com/uploads/1/3/0/5/130551708/batajulotobo.pdfIn PDF document text
    • http://mail.erppartner.ch/uploads/1/3/0/2/130289774/bugekugoxexe.pdfIn PDF document text
    • http://allaboutgreenvillesc.com/uploads/1/3/0/2/130291658/diwavamijulipo.pdfIn PDF document text
    • http://weenies.online/uploads/1/3/0/2/130288962/6597958.pdfIn PDF document text
    • http://xxx666xxx.site/uploads/1/3/0/4/130436089/gegesiloveze-latanoj-pubuzowiguwe-nebaf.pdfIn PDF document text
    • http://xodessertsandbakery.com/uploads/1/3/0/8/130873856/kepabugalegi-sukutulexerot-tujidabovevexud.pdfIn PDF document text
    • http://www.sophia-quest.com/uploads/1/3/0/8/130814643/4529c.pdfIn PDF document text
    • http://norcal-cre.com/uploads/1/3/0/7/130740590/7118089.pdfIn PDF document text
    • http://manjindersinghmanesh.org/uploads/1/3/0/5/130542692/94b7ebfb9396c0.pdfIn PDF document text
    • http://jackiefrankeditor.com/uploads/1/3/0/5/130589014/wofizitisiji.pdfIn PDF document text
    • http://hostmaster.unesco-mab.org.uk/uploads/1/3/0/6/130639573/kijilomafalisunik.pdfIn PDF document text
    • http://newyorklifeinsuranceattorney.com/uploads/1/3/0/5/130589433/0ce8967a0d60.pdfIn PDF document text
    • http://rosemarysaromatiking.com/uploads/1/3/0/5/130590672/jefivoseba.pdfIn PDF document text
    • http://cascading-quilts.com/uploads/1/3/0/3/130324278/7e82be8d178f2.pdfIn PDF document text
    • http://millionairsgaming.com/uploads/1/3/0/2/130272551/2b6df39074.pdfIn PDF document text
    • http://elodiepaints.com/uploads/1/3/0/2/130273626/bizozipukufumipexef.pdfIn PDF document text
    • http://gravanza.com/uploads/1/3/0/2/130287299/rikikiwirupa.pdfIn PDF document text
    • http://wearelegionofficial.com/uploads/1/3/0/6/130603913/c04b10.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://www.adobe.com/).NotoIn PDF document text
    • http://www.google.com/get/noto/http://www.adobe.com/type/ThisIn PDF document text
    • http://scripts.sil.org/OFLNotoIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9E 8508 bytes
SHA-256: a0a7ea2117266d58772dd7b2d14fd75182bf89d6ed0f0acbecbff85b62254a60
font_01_sfnt_off00008e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1C 5244 bytes
SHA-256: afd8868629b61d85ec32a8a0de1ca84da82d48156cdd7447d7c4f51403cf5149

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