Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee3a1874f746868…

MALICIOUS

PDF

75.6 KB Created: 2021-02-25 10:30:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ede9e260195bc9912f27874ebbe1d53c SHA-1: 537611767c83945fdd8d9c9f2c2a7be322f9a4a9 SHA-256: eee3a1874f7468683c3fcf805a2fe6b2ebdda2dcf7c18e08ce88151534b0c4c7
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://baarspo.ru/aws?utm_term=how+to+set+up+a+westminster+chime+clock PDF link annotation
    • https://cdn.sqhk.co/nogawevorus/dhj3L9Y/retroflag_gpi_case_mods.pdfIn PDF document text
    • https://xuwupeloz.weebly.com/uploads/1/3/4/7/134734270/sibujufagug_gunepaw_woxasafu.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/6560628.pdfIn PDF document text
    • https://pafodezeba.weebly.com/uploads/1/3/4/5/134589846/pujomepafo_rowewarugo.pdfIn PDF document text
    • https://mepovokure.weebly.com/uploads/1/3/0/9/130969824/newuv.pdfIn PDF document text
    • http://verifedform.com/homophones_worksheets_for_grade_4howbw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/leronigegowumum.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/action_plan_template_free_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/31544054877.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/methods_of_information_geometry.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/nuvezefuwudokaxusaw.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/52009207708.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/aggiornamento_android_8_huawei.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/wogugamil.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/c_s_f_ki_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/cydia_impactor_for_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/gangster_games_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/ginikunelunogilog.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_off0000eb08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB08 5292 bytes
SHA-256: bd297848466bfb6eb3d5738400606f3fef1c589bce6d0fb1c77bf079494f6a3b
font_01_sfnt_off0000fce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE5 10748 bytes
SHA-256: 73f090187ab9e7b32284b083d1f60721e9344f08555408f7533bd6c8e2caedbc

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