Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d115fb786c89688…

MALICIOUS

PDF

73.8 KB Created: 2021-02-26 12:22:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: e85baa5be88ae198040672d93283255b SHA-1: 500f5e1b764cf603251166c544fc99a18f686a9c SHA-256: 3d115fb786c8968878e7796c4954f2bcc51fc6757288b9d8aaedcab2664e143a
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically referencing a popular product ('dyson airwrap') to entice clicks. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high volume of links on disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://xezojetit.ru/123?utm_term=how+to+get+best+deal+on+dyson+airwrap PDF link annotation
    • http://tosefabebiribow.scienceontheweb.net/radio_shack_scanner_mods.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/60438025611.pdfIn PDF document text
    • http://organic100.fun/motorola_surfboard_sb61411gcha.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/tagixepaxaxozidemijuzux.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/rizisorutijuneligo.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/biroteb.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/ca_dre_rental_application_form.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/tugezaduwuv.pdfIn PDF document text
    • http://dimax.website/xikeneponasisazexalunouj4mh.pdfIn PDF document text
    • http://leledup.mypressonline.com/the_highwaymen_movie_trailer.pdfIn PDF document text
    • http://nesobaka3.xyz/supergrass_alright_piano_sheet_music8txy4.pdfIn PDF document text
    • http://buwovavozu.getenjoyment.net/31048377972.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/rubutigogifijafenonuji.pdfIn PDF document text
    • http://subugemorikeg.rf.gd/98-364_database_fundamentals_book.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/tiwavoborivozuvudax.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/mixuzojupapisogarisela.pdfIn PDF document text
    • http://roniwixanedif.epizy.com/sick_atm60.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C0 5424 bytes
SHA-256: bbfcd734aa0fd97d254be0f1581b1463f30d09ddf6dcae811c27502140c1e730
font_01_sfnt_off0000f34f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34F 11264 bytes
SHA-256: a8b4670cff7b6b08bbf2b6295af62770b5947e398d68638fed948513ca366a3b

Open this report in the interactive analyzer, or submit your own file for analysis.