Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7ec948c6b18658…

MALICIOUS

PDF

36.5 KB Created: 2020-03-29 15:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: 549af07cb690bc120750bd90be660277 SHA-1: bf78bd5591ac1a57697067620486520c196cebf4 SHA-256: 1d7ec948c6b186588afab9f1a43832f31b2bff61d16135e09a247755165f60cb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to other PDF files hosted on various domains. This pattern is indicative of a link farm or a phishing campaign designed to direct users to potentially malicious content. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is an attempt to manipulate search engine results or distribute content across many domains. No scripts were extracted, limiting the analysis of direct payload delivery.

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://hotelvic-phase2-ko.devsite-1.com/uploads/1/3/0/6/130603710/130603710.html#la+nails+frankfort+ky PDF link annotation
    • http://amarjobs.com/uploads/1/3/0/5/130539412/2508073968.pdfIn PDF document text
    • http://capitolsteamandclean.com/uploads/1/3/0/4/130488228/de3c30d44dff.pdfIn PDF document text
    • http://sandiegomacncheese.com/uploads/1/3/0/7/130738801/fasoludonawopef_notemonuro_fezinen_nabusivokafof.pdfIn PDF document text
    • http://xpgaming.org/uploads/1/3/0/6/130604505/rakapiwoxoxu-laxugiwulum-jujelofoxewase.pdfIn PDF document text
    • http://finnbjornerud.com/uploads/1/3/0/7/130738562/kibosojavu_rupiriwukaza_zuwaja.pdfIn PDF document text
    • http://thelifeinnyc.com/uploads/1/3/0/6/130621649/zotipozozof.pdfIn PDF document text
    • http://mansense.info/uploads/1/3/0/7/130739068/malulegu.pdfIn PDF document text
    • http://laurieingramdesign.com/uploads/1/3/0/7/130740489/luvekurafaj.pdfIn PDF document text
    • http://homebuyersofcapecod.com/uploads/1/3/0/8/130813756/kuvopomoxopi.pdfIn PDF document text
    • http://latashawopwilliams.com/uploads/1/3/0/6/130605028/5484b2563527.pdfIn PDF document text
    • http://codemusic.net/uploads/1/3/0/7/130740530/vekujubufew.pdfIn PDF document text
    • http://chichesterfootandankle.net/uploads/1/3/0/3/130313363/8539306.pdfIn PDF document text
    • http://fijnbedrijf.com/uploads/1/3/0/6/130621847/betovof-femedexoxor.pdfIn PDF document text
    • http://vishnusriram.com/uploads/1/3/0/5/130550834/6854279.pdfIn PDF document text
    • http://lakarolakintana.com/uploads/1/3/0/5/130590461/25f2a14966.pdfIn PDF document text
    • http://little-sunrise.com/uploads/1/3/0/5/130538840/eb5b655.pdfIn PDF document text
    • http://mpassociatesrealtors.com/uploads/1/3/1/1/131164272/6535318.pdfIn PDF document text
    • http://tristarlogos.com/uploads/1/3/0/9/130969139/tulowudi.pdfIn PDF document text
    • http://bfitandbfab.com/uploads/1/3/1/3/131379248/616771.pdfIn PDF document text
    • http://verhuurzuid073.nl/uploads/1/3/0/2/130273788/4bd4fa.pdfIn PDF document text
    • http://hostmaster.pulsar-uav.com/uploads/1/3/0/5/130590537/2112568.pdfIn PDF document text
    • http://sealavienj.com/uploads/1/3/1/4/131408459/lomosoxafazopivit.pdfIn PDF document text
    • http://transformationalleadershipconsultants.com/uploads/1/3/0/5/130539340/9968566.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
🗂 Part of campaign: dariospainting.com 5 samples

Related samples 8

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_off0000668e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668E 7616 bytes
SHA-256: 31b67c21cebad6f1d744fc6d5b2da0aabffe2fb5e896c3b8be5ba03dd08d7264

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