Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ee966c13dc4dc76…

MALICIOUS

PDF

68.3 KB Created: 2021-03-28 13:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 34398fa90dbc814f0dd1ee249f86d476 SHA-1: d7360fbc25414f515aa043c9cdb2c1ab9cdfcff3 SHA-256: 5ee966c13dc4dc76628a504e41f5535e9f4bd0fde2b182b310c7f9c5480e74c4
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. One prominent URL, https://mezovuduw.ru/wix?keyword=madison+county+high+school+baseball+roster, is likely part of the lure or a redirection chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://mezovuduw.ru/wix?keyword=madison+county+high+school+baseball+roster PDF link annotation
    • http://vvinorama.website/dodetixinutajejogapegie64t9.pdfIn PDF document text
    • http://instacopyrighthelpteam.com/how_to_be_on_finding_your_rootsnb2wa.pdfIn PDF document text
    • http://sedovarubabozop.iblogger.org/meleravi.pdfIn PDF document text
    • https://jewelilug.weebly.com/uploads/1/3/4/3/134331877/vimaxud_lufosutipa_rakifikeja_vetifo.pdfIn PDF document text
    • https://foxuginatumusex.weebly.com/uploads/1/3/0/7/130775376/kigovofuxudofagalu.pdfIn PDF document text
    • http://getyourscore.info/navebujoj2ttb.pdfIn PDF document text
    • http://mimasajikataza.iblogger.org/serizi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://87098103-4d08-48bb-90a6-807b0ef734b2.filesusr.com/ugd/1f49de_135a802fe4454407a66d1620074f4eb3.pdf?index=trueIn PDF document text
    • https://18aefb47-0221-41c7-ace0-4f78eb33e730.filesusr.com/ugd/bca722_1b548e6223354174a9846743855f38d1.pdf?index=trueIn PDF document text
    • http://fepapagibonu.rf.gd/jimmy_evans_sermons_tipping_point_series.pdfIn PDF document text
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_239fa3a3ffac445cbca946a363830337.pdf?index=trueIn PDF document text
    • http://zonufezago.epizy.com/9613700756.pdfIn PDF document text
    • https://d2497fa9-5496-4194-9764-f4b168485e88.filesusr.com/ugd/eed259_0c3dc3dea9b841f2b5fcf2bf66b5ac8d.pdf?index=trueIn PDF document text
    • https://7605d98d-8b17-4a41-9383-f5c8d5af9bcc.filesusr.com/ugd/2bed4c_9dbfcebe431c4616bb003cbd4255fb1e.pdf?index=trueIn PDF document text
    • https://9e705916-5bde-4eb8-be9b-8b3e910fbaf8.filesusr.com/ugd/c7a620_98320bc00e0e483d892eca2d33d03ea1.pdf?index=trueIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_457919cfc6124494b1e84f65dc3d373b.pdf?index=trueIn PDF document text
    • https://c1f973cf-d719-4acb-8f9e-cd83ae4fb94d.filesusr.com/ugd/057766_577fcc3fe52a4b79a3160b31b8fd712c.pdf?index=trueIn PDF document text
    • https://7915398d-c9c2-4241-abdb-40cf742e4b8d.filesusr.com/ugd/d4df0f_07e602151f1b4c2f8b6158bb7d570d9a.pdf?index=trueIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_7538e8323d9a4e04ab66c69a7ff79bc4.pdf?index=trueIn PDF document text
    • https://76ed6b59-b034-43ac-b949-e1c08f76e3cb.filesusr.com/ugd/ee6100_a652685d870b46ec877db0ddc4e4a609.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_off0000cbd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD6 5448 bytes
SHA-256: c232e069ba96b7136fe851a4bf8645210283bca5bf41a434257171690f3c4b4e
font_01_sfnt_off0000de69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE69 10448 bytes
SHA-256: 28b280811a2228656512a40746d48ff7db8388068f803694795393757bae5aca