Malicious PDF — malware analysis report

Static analysis result for SHA-256 206d0c7dce122e67…

MALICIOUS

PDF

65.4 KB Created: 2020-11-25 11:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bfb1d385058ecd29763ec43d99a06d8e SHA-1: 06cada0d83d0d397df033c67e2b93b840ee248bc SHA-256: 206d0c7dce122e6761892640b2bf4a548b0a0e5c29d952c9ae1a0596d6a894c5
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 link farm designed to redirect users. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of external URIs and the overall structure point towards an attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/aws?utm_term=albertine+kay%25C4%25B1p+english+pdf PDF link annotation
    • https://xuzofetix.weebly.com/uploads/1/3/4/3/134371052/2868f5ca2.pdfIn PDF document text
    • https://gononazenikemad.weebly.com/uploads/1/3/4/4/134482012/mikofitewereno.pdfIn PDF document text
    • https://zajilonuxiwez.weebly.com/uploads/1/3/4/8/134871265/rulijawujewotafewut.pdfIn PDF document text
    • https://luxexawasoju.weebly.com/uploads/1/3/4/1/134109261/fumowadapumewi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468838/normal_5faf7abe21a85.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/gomevivufuzulur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/352e13f5-7ad4-4775-87fa-bb91935fb925/wudamadosetiverotezenez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e5e0f06-e922-4186-b825-2f27e310875d/lake_superior_agates_for_sale_ebay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cee1d428-a087-40f0-9517-6e9a8a40f634/lulog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b441dcfb-771d-4fd0-b995-98d4ce30ed25/45156280952.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dd64594-3948-4bf4-a5fe-13ca85d6e05c/gosapadepejalafala.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/telecharger_magazine_burda_gratuit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a1e8934-3a9b-44e8-88ab-26ff79b43432/juxajarogilofop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e9ac07f-39dd-4c08-8306-69e52231ff55/princess_leia_costume_baby.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bcfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCFB 5628 bytes
SHA-256: 4730a4daf4146a5d2541d0487b1c6841364b5cc5211a5b71cebe0343c92c05f8
font_01_sfnt_off0000d02d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02D 12304 bytes
SHA-256: 0bbd57825574f7eacba80a96f60b6c94f6ae4ec6d13cce5fca4478d1007483df

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