Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bad9f2759961064…

MALICIOUS

PDF

81.0 KB Created: 2021-03-14 12:03:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 775209aaece7a3b99b4cab5f3a44a75f SHA-1: e2f8302ec2a62c309fadcbf634c52b1a1f94845a SHA-256: 1bad9f2759961064b134c3b97e9f37eb2a23d7567debc1eb4c43d0975b907eea
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a lure to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/award?keyword=jesus+bleibet+meine+freude+pdf PDF link annotation
    • http://mini-cam2.club/microsoft_flight_simulator_2020_release_xbox_onenxed6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464330/normal_601c67ae4c50b.pdfIn PDF document text
    • http://axacheat4.xyz/38027077246cy2x5.pdfIn PDF document text
    • https://waguxezemi.weebly.com/uploads/1/3/4/7/134703223/67506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446162/normal_6033a6e36bf51.pdfIn PDF document text
    • http://pupunorip.getenjoyment.net/82032514344.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375504/normal_6024465843412.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473622/normal_5fd6782bca5db.pdfIn PDF document text
    • http://byseles.xyz/putezakepodofituledunuroqgpqd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449779/normal_5fca2bdc10ed2.pdfIn PDF document text
    • http://luminar3-download.xyz/8357125506353amz.pdfIn PDF document text
    • http://lomidal.mygamesonline.org/ch42o2co22h2o_how_many_atoms.pdfIn PDF document text
    • https://nedalejurozawo.weebly.com/uploads/1/3/0/7/130776692/zuladinara.pdfIn PDF document text
    • http://polnews.xyz/xaxarovaloxuxianwix.pdfIn PDF document text
    • http://nanolenka.xyz/arms_reach_co_sleeper_when_to_stoprr7g5.pdfIn PDF document text
    • http://gekenig.mywebcommunity.org/38096063651.pdfIn PDF document text
    • https://jurisosisirebak.weebly.com/uploads/1/3/6/0/136086550/b0064.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380705/normal_5fcaae92f0c7d.pdfIn PDF document text
    • http://neojust.ru/canon_pixma_922_printer_inkgikbj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411686/normal_5fe2ae8fc8667.pdfIn PDF document text
    • http://stal-kemerovo.ru/jubofjljpl.pdfIn PDF document text
    • https://boriduleloson.weebly.com/uploads/1/3/4/0/134012687/70214.pdfIn PDF document text
    • https://tedawubav.weebly.com/uploads/1/3/4/3/134376018/wekasawixut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF56 5108 bytes
SHA-256: 07c211cae048df7d00cf29226b6f9632d3fab2eaf6a30f1e1dd1600a154418d6
font_01_sfnt_off00011093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11093 11336 bytes
SHA-256: 1c4f87536402c13fb77be95acb579a76e62fc34866ba58d942cfbff974f8eb09

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