Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6d24d16e203b2f…

MALICIOUS

PDF

71.9 KB Created: 2021-03-14 07:19:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: fa9943015dd5408eeaccb5824dd818f0 SHA-1: 52eb2c55339595001f7731e0d8f44c9d52f2b26b SHA-256: 0d6d24d16e203b2faf0ec9c23a39c5379337fdc8b465488e8d3ab3430ad9be76
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. It contains a large number of external links, many pointing to disposable hosting, suggesting it is part of a link farm designed to redirect users. The primary external URL identified is https://mezovuduw.ru/award?keyword=attunity+replicate+tutorial+pdf, which is likely a phishing lure or a gateway to further malicious content.

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/award?keyword=attunity+replicate+tutorial+pdf PDF link annotation
    • https://zikotidule.weebly.com/uploads/1/3/4/6/134604350/vuzudezani-vadujebu.pdfIn PDF document text
    • https://womovenurobo.weebly.com/uploads/1/3/1/8/131872055/b970071b7832f.pdfIn PDF document text
    • http://pisifivomi.22web.org/verizon_fios_support_phone_number.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://44407f20-7244-4107-9544-84d8151b6f9a.filesusr.com/ugd/8508de_16bd2b912da74c52aa3172d5e0c993da.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0a76d1f-b24f-4603-a304-6a7bbe3de4ca/tafutotabidowediji.pdfIn PDF document text
    • https://27158da8-170d-48ca-a528-b8ced62fe517.filesusr.com/ugd/9fc8c3_94cb7b5152454982bd37bc256a834486.pdf?index=trueIn PDF document text
    • https://6f672a44-e16c-4921-a0f1-e3781c0647c5.filesusr.com/ugd/bda22a_3756a824ed9f40d1963fc77e900df61e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e7523bf-61a3-4813-ae40-bce34868a9ef/7218097319.pdfIn PDF document text
    • https://7fad2989-91b8-457c-89bc-9a0e7aeef19f.filesusr.com/ugd/b03ff3_e25a0e1045fb47f2b91f156c22eb467e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/27cac310-2064-47b1-827e-e9cd62bc7195/41421555021.pdfIn PDF document text
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_1153ebf428fb46ee9eb65337161d4282.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/186b01ce-a10e-4303-be33-3262ec6a2505/kepujovimij.pdfIn PDF document text
    • http://vuzudaru.epizy.com/17357119634.pdfIn PDF document text
    • https://98350ace-7ac4-4f38-a9d9-579fdad8050b.filesusr.com/ugd/9b2d9b_02cb86ec55e940c7bec1500652157b33.pdf?index=trueIn PDF document text
    • https://bdee3e82-1fe6-4084-b289-f15f5249f83e.filesusr.com/ugd/749937_95e843e93c39411389d6d500f396ccfa.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4562932a-faac-4169-97c2-991ef64f6b85/40416836900.pdfIn PDF document text
    • https://39ad70c8-6a03-4de2-a89b-b0209cba5754.filesusr.com/ugd/d2759c_f66de5058e9b4d93b2172fdc03ecc24c.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_off0000dc1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1E 5064 bytes
SHA-256: d14914e25c3db26714486e0653d37aaa4fc8baf762e6536d1e4f97f6cf825303
font_01_sfnt_off0000ed75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED75 10992 bytes
SHA-256: 96180278f145cdb42fdc740624ee043d90452227b69d39136bcbc4563823d1bb

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