Malicious PDF — malware analysis report

Static analysis result for SHA-256 179c27063d0530d0…

MALICIOUS

PDF

78.5 KB Created: 2021-03-20 13:55:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: fbd15b449cb13258e9f49b1b702909b2 SHA-1: cee820e368851d4512ea52ffb7e35a0bc5ca6bf8 SHA-256: 179c27063d0530d0e4f374c5a46142c0355469a541b2d50ab6d01f000345da17
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and heuristic analysis indicates it is a link farm on disposable hosting, likely intended to redirect users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. The document body, though heavily obfuscated, contains keywords related to 'Ncl cruises 2020 cancelled', suggesting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://midufefew.ru/wix?keyword=ncl+cruises+2020+cancelled PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455377/normal_6028b7a7734f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461483/normal_60559edf7be5a.pdfIn PDF document text
    • http://puduvab.sportsontheweb.net/barcelo_maya_palace_map.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386365/normal_600a4f29396b8.pdfIn PDF document text
    • https://lanapovo.weebly.com/uploads/1/3/1/4/131437145/f8631c.pdfIn PDF document text
    • https://pumaxodevuk.weebly.com/uploads/1/3/1/8/131872084/wokulawe_panewuramon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421050/normal_6024ae8b874c3.pdfIn PDF document text
    • http://likujodofefa.22web.org/72736376010.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/bioplastics_magazine.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462374/normal_600586ea5ef9b.pdfIn PDF document text
    • https://tumizoma.weebly.com/uploads/1/3/2/8/132814974/rumopupari.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408862/normal_604ccc0b97701.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384029/normal_60039a7761a44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470211/normal_60263bf781bab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e05653fc-386e-4c8b-889d-738aee72c63e.filesusr.com/ugd/62421a_9117eaa7f74f415d8c0e0aeb73a69dda.pdf?index=trueIn PDF document text
    • https://e028ba52-6c86-493e-86b7-fecf7cd1c3eb.filesusr.com/ugd/bcb9fd_3aa28460699d4168983486c21fff19ca.pdf?index=trueIn PDF document text
    • http://mivowejow.rf.gd/81763516213.pdfIn PDF document text
    • http://fulawumobolofog.epizy.com/wavelet_transform_coefficient_plot.pdfIn PDF document text
    • https://ffb80149-315c-4936-8637-e87477b606fc.filesusr.com/ugd/e7410d_08d25d7ba44640a0a51b93cdfaabec73.pdf?index=trueIn PDF document text
    • https://247e77cc-5367-4382-8586-7c5891409f42.filesusr.com/ugd/2dbf5a_3f1b00b2afab4455841b9f2ec8c812ec.pdf?index=trueIn PDF document text
    • http://mevukesamuzu.rf.gd/final_fantasy_xv_guide_free.pdfIn PDF document text
    • http://wuwitizezaxevo.rf.gd/cutting_diet_plan_male.pdfIn PDF document text
    • https://3465328d-eb21-4af5-a94e-b8fdacefaafa.filesusr.com/ugd/c63bf9_e30e684ffd75454183666b1e051a1102.pdf?index=trueIn 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_off0000f47b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47B 5176 bytes
SHA-256: 2e7b20d8dc194546b92f3a417fa77e4eecb60d5a52173ffa64556d73c4642bf4
font_01_sfnt_off00010624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10624 10856 bytes
SHA-256: d3f660e1fe4ca2b7d4d12e536445b261f6846de398e37ce0fd0a7c1890b04bc3

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