Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f75f31e09d7b3d…

MALICIOUS

PDF

45.7 KB Created: 2020-03-09 02:58:06 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 7b772b0d1628d9561e886968370d7747 SHA-1: c1d538a2e006f36e6be0c15f58741f28379cc0f9 SHA-256: 56f75f31e09d7b3de98af3f4b899eedd7258314bb093a89aab4f4ff0bc6324bb
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO spam campaign. The primary intent appears to be directing users to a vast collection of other PDF documents, potentially for malicious distribution or to manipulate search engine rankings. 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://khpottery.com/uploads/1/3/0/3/130323462/130323462.html#alcatel+1+model+5033x PDF link annotation
    • http://thegrayorder.com/uploads/1/3/0/7/130775688/buvigin.pdfIn PDF document text
    • http://www.hcrebelband.org/uploads/1/3/0/6/130604010/jutilo_kafunitewu.pdfIn PDF document text
    • http://hostmaster.dimz.co.uk/uploads/1/3/0/6/130639021/4937696.pdfIn PDF document text
    • http://adapt-life.com/uploads/1/3/0/6/130620564/puvopami.pdfIn PDF document text
    • http://paghosts.com/uploads/1/3/0/3/130323596/misogudadix-devinazofit-kuzolewepofop-gepip.pdfIn PDF document text
    • http://www.cannahome.ca/uploads/1/3/0/6/130620435/sufagasab-ziwivoronup.pdfIn PDF document text
    • http://stan.holyrood-drama.com/uploads/1/3/0/7/130739012/sazimur.pdfIn PDF document text
    • http://slatefarmsnc.com/uploads/1/3/0/6/130621292/tujelivusu-jipokumovilubo-jegolujanusunaj-mewixavakisala.pdfIn PDF document text
    • http://www.extract-cloud.com/uploads/1/3/0/5/130541402/ravafipibivulefi.pdfIn PDF document text
    • http://vivavocestyling.com/uploads/1/3/0/5/130588618/wodenedovu.pdfIn PDF document text
    • http://www.trieceyshouseofmusic.com/uploads/1/3/0/2/130272336/relijewutinesax-fexajaduk.pdfIn PDF document text
    • http://camdenlawncare.com/uploads/1/3/0/7/130775491/3088968.pdfIn PDF document text
    • http://plamettorvblog.com/uploads/1/3/0/8/130814984/656707.pdfIn PDF document text
    • http://mta-sts.mail.caninetrainingacademy.net/uploads/1/3/0/5/130540197/3764598.pdfIn PDF document text
    • http://mta27.somekindofsimple.com/uploads/1/3/0/2/130288316/gatuvakatapo-fuxiritavegevi-tepuzene-lafulutonovod.pdfIn PDF document text
    • http://el021.elrepco.com/uploads/1/3/0/6/130640024/tiroriwipawikexo.pdfIn PDF document text
    • http://www.bestflooringco.com/uploads/1/3/0/6/130603958/butewij.pdfIn PDF document text
    • http://statementzine.com/uploads/1/3/0/5/130550698/maxakaxuguz.pdfIn PDF document text
    • http://rew4you.com/uploads/1/3/0/7/130776564/bimogigajizezavirumi.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 7

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_off00008350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8350 9760 bytes
SHA-256: 19c8ad09b2a9bf4dbbfc4d3e08e10874401ccc23401a8f0b0a67d61e872d7365

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