Malicious PDF — malware analysis report

Static analysis result for SHA-256 caabbc66cdd51b86…

MALICIOUS

PDF

84.3 KB Created: 2021-03-19 04:33:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5f787f2fe68ad4557f9d6061e823c7be SHA-1: be5729a8caf32e01b2ae6e8ae4c6eb0c81dc6dc1 SHA-256: caabbc66cdd51b862dbe97bd5db86776b9555129555f59da280f21341a780366
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous external links, a common tactic for phishing or SEO spam. The primary URL, 'https://ponafet.ru/123?utm_term=canon+5d+mark+iv+firmware+update', suggests a lure related to camera firmware updates, aiming to trick users into visiting potentially malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://ponafet.ru/123?utm_term=canon+5d+mark+iv+firmware+update PDF link annotation
    • https://cdn.sqhk.co/setuboluraje/ikAhegf/letter_format_for_students_formal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478655/normal_5fdec463cbbb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474471/normal_5fef3c935d14d.pdfIn PDF document text
    • https://nupezodebugu.weebly.com/uploads/1/3/2/3/132302780/8207242aece8073.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/MHicOjd/quote_coloring_pages_for_adults.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464739/normal_6035ab3183ff9.pdfIn PDF document text
    • https://lakojelot.weebly.com/uploads/1/3/1/6/131637836/8458021.pdfIn PDF document text
    • https://rizigavitud.weebly.com/uploads/1/3/4/5/134581125/dejedakaxuzufa_pikukebe_jedomo_kisapix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2cd9d5e4-2ed2-4ec5-80ef-49c7920d1bc1/fubikulewitemaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e443764b-1a48-4e70-98b9-1684ab6461e0/nazm_hikmetin_iir_yazd_kadn_bulmaca.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/dozavulatoripozopizune.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/puxikeganuvonixo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/953a7cd2-86f5-46d1-bd9e-59ce748e1061/87165670248.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/006507ce-bf67-4446-bcee-e83660cceb8c/social_security_earnings_limit_2020_for_early_retirement.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/compound_interest_questions_and_answers_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/vovoposamimagedidefisoku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43783199-3e1c-429d-920a-56fbf5c61ba0/download_driver_acer_aspire_one_722_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/27065039394.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/dapukisaxuwoduf.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/their_eyes_were_watching_god_discussion_questions_and_answers.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC73 4140 bytes
SHA-256: ed834dfc3a8998398342ccc252002473c434bfde64a71ff42c41d0fa3d76ce35
font_01_sfnt_off0000fb28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB28 5220 bytes
SHA-256: 6eb7a8e082a313c702bc84567fec275d59a52cf3c78608f1cd7bde45860431e1
font_02_sfnt_off00010cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF3 11952 bytes
SHA-256: fa429923a335d106188e499f386a966333fca16ff72e9d74387fa9fa5ba9d3be
font_03_sfnt_off000134ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134ED 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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