Malicious PDF — malware analysis report

Static analysis result for SHA-256 65e992e2be085916…

MALICIOUS

PDF

60.1 KB Created: 2020-05-02 11:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b16bc567817aac523a303615db64ceae SHA-1: 6fa3fe327fe1e61209623a31db195d578b7caa41 SHA-256: 65e992e2be085916d1823959ae679b4dfe074c69c314289c00c04e01cd37848b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, identified as a PDF link farm. The primary purpose appears to be SEO manipulation or directing users to potentially malicious content hosted on numerous domains. No scripts were extracted, but the extensive linking suggests a malicious intent to drive traffic or distribute further payloads.

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://acouturelife.com/uploads/1/3/0/4/130483350/130483350.html#10th+grade+balance+chemical+equations+worksheet+answers
    • http://householdgenius.com/uploads/1/3/0/8/130874090/zimarububi-buvasidor.pdf
    • http://mrsleep.org/uploads/1/3/0/3/130313470/7ecf3c65195472c.pdf
    • http://irenesdreambox.com/uploads/1/3/1/4/131437413/xokuvubusa.pdf
    • http://kittywatchjapan.com/uploads/1/3/0/2/130272554/d79e7b14265.pdf
    • http://virtue.coffee/uploads/1/3/0/9/130969205/jizudo.pdf
    • http://thecovfefefile.com/uploads/1/3/0/7/130775679/zaderu.pdf
    • http://tnems.org/uploads/1/3/1/4/131453114/xipowulezuji-vudaxusaw-molitib.pdf
    • http://rawstudioz.org/uploads/1/3/1/0/131070151/5969960.pdf
    • http://glorifyu.net/uploads/1/3/0/2/130288761/meluxojolorizepa.pdf
    • http://mydesignsandremodeling.com/uploads/1/3/0/5/130540725/jibifovaruz.pdf
    • http://hipdowntown.com/uploads/1/3/0/9/130969728/1c3573d.pdf
    • http://cakemeawaybakerytx.com/uploads/1/3/0/6/130604102/gitevon-wigaduta.pdf
    • http://churchesformentalhealth.com/uploads/1/3/0/6/130639802/kotivonumabudip-godewiwowefeba.pdf
    • http://fourthysevensoft.com/uploads/1/3/0/8/130874679/1ed816b9ec6c17.pdf
    • http://thecapitallodge.com/uploads/1/3/1/4/131437117/xuzojugani.pdf
    • http://kvconsulting.biz/uploads/1/3/0/5/130588846/3128327.pdf
    • http://biofouling.net/uploads/1/3/1/4/131406202/2936536.pdf
    • http://cedarhilldevelopersllc.com/uploads/1/3/1/4/131408298/5473408.pdf
    • http://tusclasesdepoker.com/uploads/1/3/0/6/130639815/4458895.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a36a.bin
97382e506773bfe77f3922372412eb917f5656b299f0cf952845187441b48d4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA36A 8500 bytes
font_01_sfnt_off0000c424.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC424 2652 bytes
font_02_sfnt_off0000cd8c.bin
42fec308b7cab2f393414e9bdc1a6bd25b4aa0b9070acde390e3b63ffb91afd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8C 16100 bytes

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