Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fde1796a385d9ca…

MALICIOUS

PDF

38.2 KB Created: 2020-03-09 13:36:37 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 8e55a5471b2e59f7cbce87449358e5c5 SHA-1: 3e93f63323f97c495b4b17f37d8b2675e645ef9f SHA-256: 3fde1796a385d9cafbd122863ba0a3db899b394ba990fc970c0af575b07dc7c6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with 'relicwinecellars.com' being a dominant host. One of the embedded URLs, 'http://travel.rodhillportraits.com/uploads/1/3/0/3/130379928/130379928.html#ews+certificate+form+upsc', suggests a lure related to certificates or forms. No scripts were extracted, limiting the analysis of direct payload execution.

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://travel.rodhillportraits.com/uploads/1/3/0/3/130379928/130379928.html#ews+certificate+form+upsc PDF link annotation
    • http://relicwinecellars.com/uploads/1/3/0/3/130313127/pufegawaragoriveb.pdfIn PDF document text
    • http://agapanthus-plants.com/uploads/1/3/0/6/130639291/ec39d04ac77.pdfIn PDF document text
    • http://heroesofpublicsafety.com/uploads/1/3/0/5/130540214/3621039.pdfIn PDF document text
    • http://coryfair.com/uploads/1/3/0/5/130540402/3819886.pdfIn PDF document text
    • http://munodesign.com/uploads/1/3/0/7/130740264/1ee20.pdfIn PDF document text
    • http://kunselmanelectricinc.com/uploads/1/3/0/9/130968949/pizupuwosibat.pdfIn PDF document text
    • http://abundantyoga.com.au/uploads/1/3/0/6/130639924/rugavivub-tapefediku-xujavasex.pdfIn PDF document text
    • http://titansofmediamarketing.com/uploads/1/3/0/3/130323462/f91f4f79769d0.pdfIn PDF document text
    • http://indigentweb.com/uploads/1/3/0/5/130588772/xajibi_gejanog_madagalurinuwu_wetewewofot.pdfIn PDF document text
    • http://skemautic.com/uploads/1/3/0/5/130588805/sawumanuvupurubawugu.pdfIn PDF document text
    • http://fasoemarket.com/uploads/1/3/0/8/130813033/149e6.pdfIn PDF document text
    • http://vacationseriously.com/uploads/1/3/0/5/130588987/gevorexuvipimibupaz.pdfIn PDF document text
    • http://creativecoast.de/uploads/1/3/0/5/130588937/daguda.pdfIn PDF document text
    • http://littleboxofhope.club/uploads/1/3/0/6/130639356/26ae09.pdfIn PDF document text
    • http://wyomingvalleymedical.com/uploads/1/3/0/4/130476791/3b2115032c3.pdfIn PDF document text
    • http://mindlab-uk.org/uploads/1/3/0/5/130543848/nunek-xopomubujuge-renokopidup.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 1

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_off00006c48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C48 8236 bytes
SHA-256: 385902826087f64456da06d48d92ae97c5663004568a1de855876ca0fb74cafa

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