Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06dd6737b038d21…

MALICIOUS

PDF

81.2 KB Created: 2021-03-16 18:11:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c0d7def0498200ba642cdce0deedbbfd SHA-1: 59d98807b8697e66c311c854be4ef919a5e298df SHA-256: b06dd6737b038d21061996518d90a8f8556e01898551af8e0881b41f4b81544e
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://zajinet.ru/wix?keyword=ge+profile+washer+model+wpre6150k2wt+manual PDF link annotation
    • https://cdn.sqhk.co/leredupodeka/0ibUIgg/83586084752.pdfIn PDF document text
    • http://kazimibi.getenjoyment.net/southwest_carry-on_rules.pdfIn PDF document text
    • http://ipoteka.net/853296784129m8bk.pdfIn PDF document text
    • http://manamuposa.getenjoyment.net/loxalazeguvimavu.pdfIn PDF document text
    • http://salonvarna.com/28899123359t52e0.pdfIn PDF document text
    • https://cdn.sqhk.co/tenotitur/dgcjcPu/xomapur.pdfIn PDF document text
    • http://dadivasim.sportsontheweb.net/16642414066.pdfIn PDF document text
    • http://jozipuvuwuzaj.mywebcommunity.org/pefasapefewubisefuvaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402507/normal_6005ae8636921.pdfIn PDF document text
    • http://dadevizevarek.scienceontheweb.net/mirugexexasopoxiv.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/17344376794.pdfIn PDF document text
    • https://cdn.sqhk.co/mifopanikil/Iya5ifP/toon_blast_online_gratis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388818/normal_6037444f50f95.pdfIn PDF document text
    • http://tawaguf.scienceontheweb.net/building_maintenance_system.pdfIn PDF document text
    • http://leomannapov.com/cross_aldol_condensationb6bic.pdfIn PDF document text
    • http://pro-komp-master.website/sekuwasonenuboaelw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415326/normal_600eb0b6c34e0.pdfIn PDF document text
    • http://presalon.xyz/is_microsoft_project_easy_to_usefkboo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404293/normal_603a144e44115.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/mexesazaxasa/deshabhimani_aksharamuttam_quiz_2019_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/advanced_business_english_lessons.pdfIn PDF document text
    • http://nozozuwovore.atwebpages.com/diagrama_de_casos_de_uso_ejercicios_resueltos.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_off0000fbc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC0 6072 bytes
SHA-256: efd4b0d6a0784b9c603c2242a33cae97f6b4a7b19401bd9d936ca3f5c17d88ba
font_01_sfnt_off0001105a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1105A 10944 bytes
SHA-256: 58c0221f0eb9bd4c91431349d4ed63527443a5c21d4aa53f5a1695bf4cec892b

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