Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec2cdc0b6f64ae4…

MALICIOUS

PDF

44.4 KB Created: 2020-03-24 18:56:57 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 8b7bf75caeca7aa50eda464a818ee76a SHA-1: 98c4e603f7f384094a57c36d27dfa4de5e0df27f SHA-256: bec2cdc0b6f64ae4f9c9470ba92c29f5a751285d40107608963e19018a062c46
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The embedded document body text, though partially corrupted, contains a title related to technical drawing standards, which is likely a lure. The primary attack pattern involves directing users to a wide array of external resources, potentially for malicious distribution or SEO abuse.

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://masonleigh.com/uploads/1/3/0/6/130640025/130640025.html#normas+de+acotacion+en+dibujo+tecnico PDF link annotation
    • http://www.mapuae.com/uploads/1/3/0/8/130873973/guzononepajorom.pdfIn PDF document text
    • http://www.anytownchamber.com/uploads/1/3/0/8/130814065/25a9f15b8fb8.pdfIn PDF document text
    • http://sharedexchangeyfu.org/uploads/1/3/1/0/131070306/bomuw_tisif_jefafoxuwe.pdfIn PDF document text
    • http://massageforthemasses.com/uploads/1/3/0/3/130324092/guwej_lotizego_ditijamuvunido.pdfIn PDF document text
    • http://sysdep.xyz/uploads/1/3/0/6/130604264/lirinakov.pdfIn PDF document text
    • http://traderremodelation.net/uploads/1/3/0/4/130436202/7819377ce3fecf0.pdfIn PDF document text
    • http://ibankingresume.com/uploads/1/3/0/6/130620609/lekegem.pdfIn PDF document text
    • http://www.adaptivemanufacturingtool.com/uploads/1/3/0/5/130543552/9467004.pdfIn PDF document text
    • http://yellowpummelo.net/uploads/1/3/0/7/130774993/6478158.pdfIn PDF document text
    • http://islandscast.com/uploads/1/3/0/6/130621447/kofujekerubi.pdfIn PDF document text
    • http://westwoodsurveyors.co.uk/uploads/1/3/0/5/130590321/fuxefebexagosiwa.pdfIn PDF document text
    • http://leukemiafoundationofaz.org/uploads/1/3/0/4/130478374/lalidirekov.pdfIn PDF document text
    • http://sheldonsteel.com.au/uploads/1/3/0/4/130435619/2227223.pdfIn PDF document text
    • http://raecatherine.com/uploads/1/3/0/7/130775654/603b1e803c1ef.pdfIn PDF document text
    • http://mx.smilingshelves.com/uploads/1/3/0/6/130604083/7a6f9c.pdfIn PDF document text
    • http://mentalmitosis.com/uploads/1/3/0/5/130550879/4811929.pdfIn PDF document text
    • http://ns.newportplusboardriders.com/uploads/1/3/0/4/130489102/1431740.pdfIn PDF document text
    • http://www.giltnerinternational.com/uploads/1/3/0/9/130970009/e9f575f8098.pdfIn PDF document text
    • http://mentok.net/uploads/1/3/0/7/130738620/bupusejuv.pdfIn PDF document text
    • http://mirkamalmi.com/uploads/1/3/0/6/130639344/2814686.pdfIn PDF document text
    • http://tickandmosquitosolutions.net/uploads/1/3/0/4/130483634/678aab00cd5.pdfIn PDF document text
    • http://hostmaster.jeanninemik.com/uploads/1/3/0/7/130738644/bimobi_zosor.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

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_off000083fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FD 8304 bytes
SHA-256: 4042c3e7cfd6e4170370525ffce8d526aba51a5531242b8f15de622db83f5b87

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