Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b6f358859da275…

MALICIOUS

PDF

63.1 KB Created: 2021-02-16 00:52:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 58c0c4e4c1fed4145d232b2e279c1fb6 SHA-1: 8c34f5d5e80b76e10dea68600c094fdc6717ab0e SHA-256: e2b6f358859da275e213e59832cfb0d52ed498c4e9fd26072843432165603b4b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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/wb?keyword=element%20amazon%20fire%20tv%20remote%20replacement PDF link annotation
    • https://lomofoxagut.weebly.com/uploads/1/3/4/5/134524577/29ef70d37e.pdfIn PDF document text
    • https://femerofuvarilef.weebly.com/uploads/1/3/4/0/134012326/4190672.pdfIn PDF document text
    • https://kiwepuzimogavuf.weebly.com/uploads/1/3/0/7/130776877/nipotapapaj_fezidirojid_lasexaguj_gafosotenumobod.pdfIn PDF document text
    • https://gubukaxonular.weebly.com/uploads/1/3/5/3/135349028/7225540.pdfIn PDF document text
    • https://pimupaxepa.weebly.com/uploads/1/3/1/8/131857198/genewodulanodifine.pdfIn PDF document text
    • https://cdn.sqhk.co/nifodotiriru/haZjjgd/khloe_kardashian_instagram_editing_app.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/luxaduzimase/beyond_the_clouds_movie_songs_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/dinumofanapasepa.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/job_interview_follow_up_email_template.pdfIn PDF document text
    • http://vixekufu.epizy.com/las_ciencias_sociales.pdfIn PDF document text
    • http://robexekipojop.rf.gd/babul_ki_dua_song_mr_jatt.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/cisco_jabber_for_windows_admin_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/architectural_sketches_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/nuwidijolup.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/rodozuvoxugafurujaji.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_off0000b975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB975 5048 bytes
SHA-256: ede84ed7579166cf988bb15d8c8f6368305a283a2f448a803368727e9e1aa6cc
font_01_sfnt_off0000caa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA2 10288 bytes
SHA-256: 63f0d5031a5e2de343019904b53ea405ca010fcfdc1eac6977a387db1259fece

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