Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded518e38482b124…

MALICIOUS

PDF

39.7 KB Created: 2020-03-08 04:47:05 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2021-05-23
MD5: 8ba06c391beb14d397ba96d0f43cbaff SHA-1: 136061df8c753aa935819d8a178a00d5fb8f82e3 SHA-256: ded518e38482b1248a6a6d40132725c2176ef1a23d03addfa2b8af81471dabdc
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links to various domains, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs likely lead to further malicious content or phishing pages, and the document's structure suggests it's part of a link farm or SEO abuse campaign.

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://www.theovercomersblueprint.com/uploads/1/3/0/2/130272470/130272470.html#adjective+clauses+with+object+pronouns+pdf PDF link annotation
    • http://tedstunner.com/uploads/1/3/0/2/130270912/desuletovaxisul.pdfIn PDF document text
    • http://nariknektalov.com/uploads/1/3/0/5/130588551/91367f14e2.pdfIn PDF document text
    • http://jonnymustang.com/uploads/1/3/0/6/130639575/5819432.pdfIn PDF document text
    • http://www.helenwieffering.com/uploads/1/3/0/6/130604595/fegibipavolimow_mimesegupuze_napekijaloxag.pdfIn PDF document text
    • http://farmboyconsulting.com/uploads/1/3/0/3/130323173/vibuxagetob.pdfIn PDF document text
    • http://playhouseplayers.org.au/uploads/1/3/0/9/130969343/foxisuz.pdfIn PDF document text
    • http://neucareers.com/uploads/1/3/0/2/130274267/394473.pdfIn PDF document text
    • http://www.cleanwatergso.com/uploads/1/3/0/4/130488621/321430.pdfIn PDF document text
    • http://sanjosedelosreynoso.com/uploads/1/3/0/7/130775982/6e537e00a.pdfIn PDF document text
    • http://e-learninganddesign.com/uploads/1/3/0/5/130545173/pimupagetesimiro.pdfIn PDF document text
    • http://garagestorageadvice.com/uploads/1/3/0/4/130476143/7efded16f.pdfIn PDF document text
    • http://nothingeasylifestyle.com/uploads/1/3/0/8/130874262/7928058.pdfIn PDF document text
    • http://www.banklon.com/uploads/1/3/0/6/130639786/908913.pdfIn PDF document text
    • http://berean9-10english.com/uploads/1/3/0/6/130603929/7664549.pdfIn PDF document text
    • http://alexorona.com/uploads/1/3/0/5/130588337/4523579.pdfIn PDF document text
    • http://ajhollowayministries.com/uploads/1/3/0/6/130620265/kevusibug-nakakawesumibak.pdfIn PDF document text
    • http://connallylab.com/uploads/1/3/0/7/130776445/d8013761.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000712a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x712A 8408 bytes
SHA-256: 16a0de384b35360c2133b7ef4acf6b4f414be860b157da613c0d909366622f15

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