Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b09beacd7cbf178…

MALICIOUS

PDF

43.6 KB Created: 2020-03-20 09:07:46 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 8d3f0c6f3b96a80787b5213ec085a92d SHA-1: 6ada560bbc10a28af7fe6b9397afdc1d8a9f78fe SHA-256: 9b09beacd7cbf178134fb535894175fb4469daf976d1557faeaaf5b1aaedba5d
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially corrupted, includes a URL that points to one of these external PDFs. This suggests a link farm or distribution mechanism for further malicious content. No scripts were extracted from this sample.

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://theneighborhoodsocial.com/uploads/1/3/0/3/130324289/130324289.html#que+es+la+normalidad+en+quimica+analitica PDF link annotation
    • http://jvman.com/uploads/1/3/1/0/131071062/c70176c.pdfIn PDF document text
    • http://www.saintmarkssilvis.org/uploads/1/3/0/7/130776104/a2b54cb18.pdfIn PDF document text
    • http://karunbithilshibira.org/uploads/1/3/0/2/130289541/jakofejun-nefota-tojivukinonareg.pdfIn PDF document text
    • http://daviddegennaro.com/uploads/1/3/0/7/130740072/mukuti.pdfIn PDF document text
    • http://mayflyappraisals.com/uploads/1/3/0/5/130589102/7006804.pdfIn PDF document text
    • http://rosaleswaterdistrict.com/uploads/1/3/0/2/130288589/3411890.pdfIn PDF document text
    • http://sageadultfamilyhome.com/uploads/1/3/0/7/130739827/b0b5f07d5.pdfIn PDF document text
    • http://danielbarboza.com/uploads/1/3/0/5/130543878/varirujo.pdfIn PDF document text
    • http://goodforshryne.com/uploads/1/3/0/7/130775542/44c2cc228f3b55c.pdfIn PDF document text
    • http://websmithconsulting.ca/uploads/1/3/0/4/130483459/vovinedilik_losuvaku.pdfIn PDF document text
    • http://www.garrettawebster.com/uploads/1/3/0/8/130813606/b09604f.pdfIn PDF document text
    • http://ciconcrete.net/uploads/1/3/0/9/130969744/3823300.pdfIn PDF document text
    • http://sjhdesignwerks.com/uploads/1/3/0/2/130289308/wezenipexanutiroso.pdfIn PDF document text
    • http://www.summersaussies.com/uploads/1/3/0/4/130435745/dewidifaruk.pdfIn PDF document text
    • http://carsilverado.com/uploads/1/3/0/4/130476417/juzusowigiwejetaze.pdfIn PDF document text
    • http://resistreform.com/uploads/1/3/1/1/131164281/6454103.pdfIn PDF document text
    • http://jakeogle.com/uploads/1/3/1/0/131071067/pamirufo_janoregawogali.pdfIn PDF document text
    • http://snarc.co/uploads/1/3/0/6/130604650/gogakibop-zixinikozinotof.pdfIn PDF document text
    • http://atlasmountaineering.co.uk/uploads/1/3/0/6/130639757/sanuni.pdfIn PDF document text
    • http://parking-aeroport-geneve-cointrin.ch/uploads/1/3/0/8/130814258/2580845.pdfIn PDF document text
    • http://tolisbistro.com/uploads/1/3/0/8/130814248/gozogapow.pdfIn PDF document text
    • http://combinette.com/uploads/1/3/0/7/130775393/319305.pdfIn PDF document text
    • http://sandlifeswag.com/uploads/1/3/0/4/130489128/8af6b10b7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 3

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_off000073ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73AC 9012 bytes
SHA-256: 2e875637a969a67d83fbd2b86f837fb43216055de284f8cab916701533974666
font_01_sfnt_off00009448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9448 2964 bytes
SHA-256: 392c0c5eee1700edb56545c228c9187b1dc290a088a16296be7b1ba6a26b78f6

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