Malicious PDF — malware analysis report

Static analysis result for SHA-256 94f743c341b2d7d7…

MALICIOUS

PDF

40.4 KB Created: 2020-05-18 05:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: b7e96066b655822686dcdf7072c320ca SHA-1: 807d701fbb5ea5d73860a786c523c308a7027ed9 SHA-256: 94f743c341b2d7d7220f9940faf35fc6cf4c7069dae584f95cd8fe619a06e789
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, many of which are numerically or generically named, suggesting a link farm or SEO spam operation. The document body, though partially corrupted, contains keywords related to 'Goodyear assurance comfortred touring review consumer reports', indicating a lure to attract users to these external sites. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://askwilliam.org/uploads/1/3/0/2/130272629/130272629.html#goodyear+assurance+comfortred+touring+review+consumer+reports PDF link annotation
    • http://mychicchateau.com/uploads/1/3/1/4/131453352/wewolemolejuriwa.pdfIn PDF document text
    • http://noahsrainbows.com/uploads/1/3/0/4/130483498/5507295.pdfIn PDF document text
    • http://shopbimbe.com/uploads/1/3/0/4/130477775/eb24c92c2.pdfIn PDF document text
    • http://theartoferika.net/uploads/1/3/1/3/131379598/9677891.pdfIn PDF document text
    • http://thirdmoment.net/uploads/1/3/0/5/130590420/gatutenadaned.pdfIn PDF document text
    • http://kosherology.com/uploads/1/3/0/5/130588248/6168876.pdfIn PDF document text
    • http://bespokeghi.org/uploads/1/3/1/3/131398576/sumifuxugodot.pdfIn PDF document text
    • http://connectedimpression.net/uploads/1/3/0/4/130477719/bofufesi.pdfIn PDF document text
    • http://stuartolivermusic.com/uploads/1/3/0/7/130739938/2b7bd4f010.pdfIn PDF document text
    • http://frenchquartourkids.com/uploads/1/3/0/3/130323932/3979592.pdfIn PDF document text
    • http://waconda.com/uploads/1/3/0/5/130550774/8366071.pdfIn PDF document text
    • http://califireco.com/uploads/1/3/1/3/131380651/zarupagigi.pdfIn PDF document text
    • http://marcoantoniopatrizio.com/uploads/1/3/0/6/130640027/zejaden.pdfIn PDF document text
    • http://becomingmoore.org/uploads/1/3/0/5/130552055/bebc67bd4d8e6.pdfIn PDF document text
    • http://districtsforchico.com/uploads/1/3/0/4/130435794/294574.pdfIn PDF document text
    • http://artcabo.com/uploads/1/3/1/3/131379268/piwapilimiko.pdfIn PDF document text
    • http://sheilaannbooks.com/uploads/1/3/1/1/131163787/pataki_sonexepiwada_tutujetif.pdfIn PDF document text
    • http://sexybody.in/uploads/1/3/1/4/131407572/7741508.pdfIn PDF document text
    • http://mayusilkart.org/uploads/1/3/0/7/130739640/jomujavejedekux-jerogipatesuja-gixeve.pdfIn PDF document text
    • http://sambucobarber.com/uploads/1/3/1/0/131070305/denetumudariwevox.pdfIn PDF document text
    • http://proaeroservellc.com/uploads/1/3/1/4/131438622/nexujizagagudokede.pdfIn PDF document text
    • http://thewisewomancompanion.com/uploads/1/3/0/2/130288720/e84275e43b86.pdfIn PDF document text
    • http://pacificwoodsigns.com/uploads/1/3/0/7/130776015/8702290.pdfIn PDF document text
    • http://stephensilberling.com/uploads/1/3/1/6/131606325/1096224.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA3 11148 bytes
SHA-256: 8d02c22f26035f37f7f58da6c3f71c1e444dcaffeefadc749c4746611b1f7868

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