Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee8db23a8e83772d…

MALICIOUS

PDF

72.5 KB Created: 2021-03-03 04:26:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4820266c9213464a0a027c21dd67cfb0 SHA-1: 9da223da545be797dec92d4f0d9e7eafa84f5461 SHA-256: ee8db23a8e83772dcaa08f76ae429ceb40c11435b3753c87740a54219981a93d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://zajinet.ru/wix?keyword=bandera+de+la+provincia+de+panama PDF link annotation
    • https://vexepagofebove.weebly.com/uploads/1/3/4/8/134866030/4571725.pdfIn PDF document text
    • http://tejidirexe.mywebcommunity.org/motion_in_a_straight_line_crash_course_physics_1_worksheet.pdfIn PDF document text
    • https://wisamifogafize.weebly.com/uploads/1/3/4/5/134598642/bc2e205.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/orange_inheritance_book_1.pdfIn PDF document text
    • https://tamukatiraf.weebly.com/uploads/1/3/4/7/134766395/zanipuma.pdfIn PDF document text
    • https://romugazasemagop.weebly.com/uploads/1/3/4/8/134897733/9ffb522b1916.pdfIn PDF document text
    • https://jiromozuno.weebly.com/uploads/1/3/5/3/135387519/4514171.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
    • http://volulel.rf.gd/98415251046.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/klb_chemistry_book_3_teachers_guide.pdfIn PDF document text
    • http://xizujibonow.epizy.com/xuzijinesuxumanij.pdfIn PDF document text
    • http://nufitexevav.rf.gd/98895000432.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/punctuation_passage_worksheets_for_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/que_son_coliformes_totales_en_manos.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/charismatic_leadership_advantages_and_disadvantages.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/facebook_dating_not_working_on_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/necesidades_biopsicosociales_del_ser_humano.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/81242984987.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/76605436543.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/98649355092.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD034 4856 bytes
SHA-256: 3c16f21740c1dafa589b35487125fc5e403811269a096aa6ff315ee69af239de
font_01_sfnt_off0000e08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08E 11156 bytes
SHA-256: d73782302cf06cfd30682d490de9f7d4ec1e67bb79b665b7473f067e93944a2a
font_02_sfnt_off0001051f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1051F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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