Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9a12b7e2888204…

MALICIOUS

PDF

47.4 KB Created: 2020-04-11 00:11:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-12-25
MD5: 2be02a5100df97f13e355eb6dafbec5b SHA-1: 00f86f14d32b4ab4555ab2d7fc277ff2e31f419c SHA-256: 1a9a12b7e2888204bb332d4912f487e0ccc83dcfa36476885abe8a4e3fc21282
96 Risk Score

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://74-123-72-35.mgwnet.com/uploads/1/3/0/2/130271081/130271081.html#ejercicios+isom%C3%A9tricos+e+isot%C3%B3nicos+pdf PDF link annotation
    • http://bayareaspark.com/uploads/1/3/0/6/130621776/nerijapu.pdfIn PDF document text
    • http://antallydigitalsales.com/uploads/1/3/1/3/131397940/644696.pdfIn PDF document text
    • http://seagroveinteriors.com/uploads/1/3/1/4/131454754/715404.pdfIn PDF document text
    • http://lastsecondcheck.com/uploads/1/3/1/4/131406121/6740543.pdfIn PDF document text
    • http://romehighnews.info/uploads/1/3/1/4/131437846/3226951.pdfIn PDF document text
    • http://daveschmidtreality.com/uploads/1/3/1/4/131410126/gikadegiwikaj.pdfIn PDF document text
    • http://springgullyanimalhospital.com/uploads/1/3/0/4/130490218/tasur.pdfIn PDF document text
    • http://savannahohmccann.com/uploads/1/3/0/8/130813117/4086866c3e386.pdfIn PDF document text
    • http://donostia-restaurant.com/uploads/1/3/0/3/130379341/xikuvavinifonis_vejusip_boduwar_mifagigafali.pdfIn PDF document text
    • http://charlesheiner.net/uploads/1/3/1/4/131406852/wexewolonulor.pdfIn PDF document text
    • http://auroratreeservicepros.com/uploads/1/3/1/4/131408117/regoden.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_off00008cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFE 9488 bytes
SHA-256: 61584f417f579f5d80feb4abde02745c2822351f568f622179639e2f3cbb630c

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