Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32601b2473828a1…

MALICIOUS

PDF

71.2 KB Created: 2021-05-15 05:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1e956268c6baa45355bd2e2fdb5ac83d SHA-1: e640c4b06919283207dfd1a8e669cec12d88a739 SHA-256: b32601b2473828a1ced7524bd07dbc9b84df3bdc681a83477ff26a8fce9d4fa6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/strik?utm_term=how+to+repair+sprinkler+pipe PDF link annotation
    • http://dkmz2.club/how_to_write_a_visual_argument_essay6q4cs.pdfIn PDF document text
    • http://marketeuro.pro/gapejioyll9.pdfIn PDF document text
    • http://clipshd.design/permutation_and_combination_exercise_answers4gehf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501514/normal_6041946568979.pdfIn PDF document text
    • http://italiabeach.space/digitech_vocalist_live_5_manualgxp40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366957/normal_60129545886fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465136/normal_6034c39547ac7.pdfIn PDF document text
    • https://gususofutuzur.weebly.com/uploads/1/3/4/9/134901105/fojenoder.pdfIn PDF document text
    • http://wei-nmvc.com/75807179632va5q1.pdfIn PDF document text
    • http://obmenkalnr.online/agile_storyboarding_software2e5b3.pdfIn PDF document text
    • http://lusolakidareve.mywebcommunity.org/plano_turistico_badajoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5fd14ae157b33.pdfIn PDF document text
    • http://1xbet-sportstavki.fun/dekumtqib4.pdfIn PDF document text
    • http://reactivaperu-viabcpi.com/dozopop51sqw.pdfIn PDF document text
    • https://furiraduwonejos.weebly.com/uploads/1/3/4/8/134870793/b0fb957.pdfIn PDF document text
    • http://bigwin-1xbet.fun/rama_judicial_consulta_de_procesos_por_numero_de_cedulaxe36j.pdfIn PDF document text
    • https://bofetolukolun.weebly.com/uploads/1/3/4/0/134018575/bupakotezazodib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://raxajabidadida.onlinewebshop.net/yamaha_dgx-660_88-key_grand_piano_bundle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6e789e7-c628-4eb3-8af7-2f97af7e2fbf/como_terminar_um_relacionamento_com_um_narcisista.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0159a97f-338c-4a7e-8ac4-e8a5d5058e72/how_did_shakespeare_impact_the_world.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dc3e308-d138-49e3-a5fd-3dfd0f2a0e82/how_to_cure_golfers_elbow_quickly.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_off0000dbd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD5 4928 bytes
SHA-256: 92b3e16afa1b11f5f27d0580881d923592e4c00326261efb11d381ccc9ebd108
font_01_sfnt_off0000ecb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB4 10296 bytes
SHA-256: 1d0f330ad97096b2148371d7327f1d0acebbe7540b3e75b176c3cb800442495c

Open this report in the interactive analyzer, or submit your own file for analysis.