Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d8a3c02af493e0…

MALICIOUS

PDF

83.0 KB Created: 2021-02-24 00:11:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: d52e413b0859c349a5aac979cf9cfdb8 SHA-1: 98fd69c67912bf8bc5eeed30702af36074bacf43 SHA-256: 02d8a3c02af493e005d37462a76cd9c25259ba6362390461592b97998c308cef
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan. It contains a large number of external links, indicating a link farm or a distribution mechanism for other malicious content. The primary URL identified is likely part of a campaign to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://druttle.ru/strik?utm_term=foucault+governmentality+lecture+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4406501/normal_5ffe736a1fb8e.pdfIn PDF document text
    • http://umdtheatre.ru/dungeons_and_dragons_5e_interactive_character_sheetkg0qz.pdfIn PDF document text
    • https://reratuzofi.weebly.com/uploads/1/3/5/3/135346135/xevunorabi.pdfIn PDF document text
    • https://tizidebiwefixim.weebly.com/uploads/1/3/0/7/130739379/65f543dd7365a.pdfIn PDF document text
    • https://sojagimizalafar.weebly.com/uploads/1/3/5/3/135317111/zuxebafa_zikunisof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370059/normal_5ffe1ad7c4c66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379859/normal_6007393b8afbb.pdfIn PDF document text
    • https://pakipuxis.weebly.com/uploads/1/3/5/3/135347710/2083195.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408184/normal_5fc871b74992b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485309/normal_5fd1c01777a55.pdfIn PDF document text
    • http://wildboost.club/foliage_report_vermont_2018wifld.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425491/normal_5fd2dec72fcfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387806/normal_5fdc7aad4a22d.pdfIn PDF document text
    • https://nupinegudoxaxu.weebly.com/uploads/1/3/5/3/135350485/xapakefadiw.pdfIn PDF document text
    • http://pagebake.com/distancia_maxima_entre_registros_sanitarios1wr0i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470977/normal_602d836730d93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477651/normal_6020ade513e8b.pdfIn PDF document text
    • http://future-techno.ru/xixuvesirlfpss.pdfIn PDF document text
    • http://porn77.design/1803109217188oeh.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_off00010760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10760 5412 bytes
SHA-256: ddd835a028a3dfa2ca22b4c8a3f4dd7dbc986f924a07dd0af75b48a3b80dabd9
font_01_sfnt_off000119c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C9 10968 bytes
SHA-256: d16977c54027dc3ad6acc601be0e64c0b0414b3ed0a7781aaf6986dbd9308b84

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