Malicious PDF — malware analysis report

Static analysis result for SHA-256 75bf81ba2f93586a…

MALICIOUS

PDF

37.1 KB Created: 2020-03-22 08:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 908f709102b2462f51279cba476d78e6 SHA-1: 693338473a70ad2537d3e7447e495ec2b5a0663c SHA-256: 75bf81ba2f93586ac83ad97939341ff1c52cc364fa036b3eb2f5a4eaa76377df
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF document is identified as malicious by an ML classifier and contains a large number of external links, suggesting it is part of an SEO spam campaign or a link farm designed to distribute malicious content. The document body presents a lure related to 'Chicco high chair replacement cover and straps' to mask the malicious intent. The numerous external URLs indicate a potential for downloading further payloads or redirecting users to malicious sites.

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://agostomiglia.com/uploads/1/3/0/4/130477351/130477351.html#chicco+high+chair+replacement+cover+and+straps PDF link annotation
    • http://www.bucksnortnrunclayworks.com/uploads/1/3/0/8/130813885/bofakudani-pezajebu.pdfIn PDF document text
    • http://eldivanproducciones.com/uploads/1/3/0/8/130874180/juladi.pdfIn PDF document text
    • http://2018.inversioneszeusllc.com/uploads/1/3/0/4/130436141/riwesukugegodotaf.pdfIn PDF document text
    • http://utah-real-estate-agent.com/uploads/1/3/0/6/130620300/zopusiv.pdfIn PDF document text
    • http://doverlions.org.uk/uploads/1/3/0/6/130639467/8ee23d936.pdfIn PDF document text
    • http://testpages.online/uploads/1/3/0/6/130621405/nopatexa.pdfIn PDF document text
    • http://chambers-maids-brecon.com/uploads/1/3/0/5/130588727/2b3ef.pdfIn PDF document text
    • http://chopstir.com/uploads/1/3/0/2/130272600/lipudigemu-wujajawu-xubiwasuxojifo-vewogewax.pdfIn PDF document text
    • http://www.fake-estate.com/uploads/1/3/0/2/130288333/waninar_naxow.pdfIn PDF document text
    • http://closacreation.com/uploads/1/3/0/5/130589317/tipomutopawaboko.pdfIn PDF document text
    • http://rustyhawkdesign.com/uploads/1/3/0/9/130968993/tiriperidigebe-zokawunikiku.pdfIn PDF document text
    • http://provisionsveganeats.com/uploads/1/3/0/6/130605396/2073516.pdfIn PDF document text
    • http://spanishmaincocoabeach.com/uploads/1/3/0/6/130640104/8600410.pdfIn PDF document text
    • http://antjones.net/uploads/1/3/0/7/130776037/sivum.pdfIn PDF document text
    • http://cunninghamfirearms.com/uploads/1/3/0/5/130588328/3494208.pdfIn PDF document text
    • http://annalisaroger.green/uploads/1/3/0/5/130588687/7715616.pdfIn PDF document text
    • http://bentleysbulliesbyvinyard.com/uploads/1/3/0/4/130476396/nerokapefelet-gelurarobex.pdfIn PDF document text
    • http://mobilenaturalmedicine.com/uploads/1/3/0/7/130738806/juxijifofexerewu.pdfIn PDF document text
    • http://mail.manheimtouchdownclub.com/uploads/1/3/0/9/130969532/c7eca9f181b.pdfIn PDF document text
    • http://fairfaxtaxisedan.com/uploads/1/3/0/5/130539849/7127867.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 2

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_off0000667f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667F 7904 bytes
SHA-256: 5c15f16a74bc8c43f5caedab3044f6e9d96ab33338c110ebd3f73cb52552d1b2

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