Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c5a14ba3d727c4f…

MALICIOUS

PDF

71.9 KB Created: 2021-06-02 20:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b3294f61b9d72e4630d173c3dd64a868 SHA-1: ccd60776379e88e1cc213c12b18b5860f5068f3a SHA-256: 2c5a14ba3d727c4f388d690636fccc49dffba8728e2753292c6481009e878403
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a heuristic firing for an external URI pointing to a suspicious domain, which is also present in the document body. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The embedded link suggests an attempt to redirect the user to a malicious site disguised as a download link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://irlanc.ru/pbw?utm_term=2003+dodge+ram+1500+repair+manual+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4494433/normal_60681258b6d57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465388/normal_60638326def2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_603e208080d2e.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/a60efe0c-43b0-4af3-b332-7f42b43d1578/kulapetogekipadenunugipo.pdfIn PDF document text
    • http://mutoteja.pbworks.com/f/what_is_the_minimum_notice_period_for_resignation_in_india.pdfIn PDF document text
    • http://tijigika.pbworks.com/w/file/fetch/144513297/20938818219.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e80b4ad7-588f-4967-a6e7-79591a3d7d1d/lifofemotipilebiri.pdfIn PDF document text
    • http://mogulobobis.pbworks.com/w/file/fetch/144495597/531289223.pdfIn PDF document text
    • http://natizasex.pbworks.com/w/file/fetch/144411435/human_genetics_concepts_and_applications_12th_edition_by_ricki_lewis.pdfIn PDF document text
    • http://sozakuvepar.pbworks.com/f/83146544904.pdfIn PDF document text
    • http://pamotekegopa.pbworks.com/w/file/fetch/144466689/maine_coon_cat_for_sale_in_malaysia.pdfIn PDF document text
    • http://masawumel.pbworks.com/w/file/fetch/144420687/math_logic_problems_and_answers.pdfIn PDF document text
    • http://rugewenuzed.pbworks.com/f/12147036477.pdfIn PDF document text
    • http://ruxafonan.pbworks.com/f/22247601491.pdfIn PDF document text
    • http://kejuziz.pbworks.com/f/fixegozibug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2dcf722-bf75-4a21-8398-373df00d396e/37267467479.pdfIn PDF document text
    • http://laxaxufudej.pbworks.com/f/55846211581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d275a8e3-3077-4a1d-8862-43b0cf0ee40f/fox_nation_on_youtube_tv.pdfIn PDF document text
    • http://rixepal.pbworks.com/f/kaguwoteluzinowezunonuke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/475c4ca8-bb4d-4de3-96a5-094fa40e82b2/30382748040.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99cd5fa5-533d-4380-a2ca-2c2a0d2082ff/how_do_i_reprogram_my_viper_remote_starter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dd44e41-b022-402d-96b7-f1775ba60aa5/el_arte_de_la_guerra_libro_paginas.pdfIn PDF document text
    • http://pusavivo.pbworks.com/f/66224709116.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_off0000dccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCD 5792 bytes
SHA-256: b39132c2d4cba99a00ea0129d67fd4636e4f80fe2d29523e57fda794ca31ee3f
font_01_sfnt_off0000f08d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08D 9776 bytes
SHA-256: 91a659350b3db252d7231810598b57de9047f6dd382a110404f03b717355f690

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