Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e829eccc895a58…

MALICIOUS

PDF

77.7 KB Created: 2021-03-15 06:51:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 09512be7fbc9ab9b59228d989cb6ccc0 SHA-1: 9d28dd0abdddd81f7ade578e50c34e44d611f081 SHA-256: 27e829eccc895a583810eba9f92c8010071136bd21e044366101361176829810
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 0.9998

Heuristics 5

  • 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 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://jumiwimov.ru/award?keyword=arduino+uno+ch340+schematic+pdf PDF link annotation
    • http://keto-menu.online/bisobonubugutosapavubux725qh.pdfIn PDF document text
    • http://chelamela.org/franchise_operations_specialist_great_clips_salaryg0o5o.pdfIn PDF document text
    • http://cmbmarketing.agency/template_for_critiquing_research_articlesk1utr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414159/normal_6016d24769aaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495975/normal_5ff783a4c03f7.pdfIn PDF document text
    • http://detonic-ordina.website/31177096380smfc7.pdfIn PDF document text
    • https://cdn.sqhk.co/rarukaboz/4VHxDhf/arijit_singh_new_song_2017_mp3_download_pagalworld.pdfIn PDF document text
    • http://nebo-baikala.ru/sony_wega_50_inch_tv_replacement_lampbeoyr.pdfIn PDF document text
    • http://affilateapp.online/how_to_open_kenmore_70_series_dryern7q4o.pdfIn PDF document text
    • http://magnitoli-2ekran.site/fagizutirumaridowasopedtlen.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/eRhdjgj/biladikemalapezuzogevezat.pdfIn PDF document text
    • https://cdn.sqhk.co/sinemajud/gjuied6/best_skee_ball_ios.pdfIn PDF document text
    • http://womans30planet.com/77383305594v8kan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428033/normal_6044f81aaf465.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/somamere/wivakaragunibibovegifez.pdfIn PDF document text
    • https://9e2b3e3a-6a02-4d3b-8ba9-5acc01041672.filesusr.com/ugd/66c878_d258fac7b3e04f9b822ed8a1c20f305a.pdf?index=trueIn PDF document text
    • https://891dfe3a-8969-4df2-b253-5ccc4ebbb7a0.filesusr.com/ugd/e66789_0bdddd5fb8fd442784a3c2a90f9c3735.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/najubu/adams_view_software.pdfIn PDF document text
    • https://37976aa0-f55f-47d3-847a-8d185b13ebf6.filesusr.com/ugd/1d6212_2fafe3c733dc46908f3305404308bbd9.pdf?index=trueIn 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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF015 5748 bytes
SHA-256: fbc24c2ec509d0892b52a4ee62098c84891ef8a462680e83f83b4d73a8a5690f
font_01_sfnt_off00010380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10380 11096 bytes
SHA-256: b47500ed1336edbb25f4d109dc6d73302f787643cf479f2d8b0baed2b451f3a2

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