Malicious PDF — malware analysis report

Static analysis result for SHA-256 026de8466162bdc0…

MALICIOUS

PDF

101.9 KB Created: 2021-03-24 13:12:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2c247f2159b6a4f0bb96d722de1a215d SHA-1: 9aef82ac4fc7f5cdd7b7c17b7cd25e2e91091416 SHA-256: 026de8466162bdc0aef442472ebaac0a1e43911b5405f66e636c96559d55de93
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 0.9992

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://pelibifir.ru/strik?utm_term=what+are+characteristics+of+realism+in+literature PDF link annotation
    • http://tideparipawovu.mygamesonline.org/old_bridge_high_school_calendar_2021.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/haiht6P/snake_color_rhyme.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/53011762109.pdfIn PDF document text
    • http://pet-guru.shop/97464978057thcuh.pdfIn PDF document text
    • http://fuxisileza.mywebcommunity.org/york_diamond_80_specs.pdfIn PDF document text
    • http://bumefivaloso.scienceontheweb.net/hibernate_5_annotations.pdfIn PDF document text
    • https://cdn.sqhk.co/geruxibab/kWvihXT/bomem.pdfIn PDF document text
    • http://fiwisud.getenjoyment.net/93998526495.pdfIn PDF document text
    • http://lafilubepojev.scienceontheweb.net/11935453233.pdfIn PDF document text
    • http://jijuduli.mywebcommunity.org/52479976124.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415530/normal_6033b3783bace.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459318/normal_602877002760a.pdfIn PDF document text
    • http://gizesodawesiv.mywebcommunity.org/nof_osteoporosis_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/tupulezi/MgdLS9d/planetside_2_stats_steam.pdfIn PDF document text
    • https://cdn.sqhk.co/woberimi/gAgcYWH/93733003520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378857/normal_603432f6e5439.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/pufuzoribofuj64l58.pdfIn PDF document text
    • http://taher-tcac.com/12377473403vsoxf.pdfIn PDF document text
    • http://meroxisawifagu.mygamesonline.org/larebafu.pdfIn PDF document text
    • http://kumajamefe.getenjoyment.net/zuwata.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://70fbc5f3-53e4-4072-9ff7-a5862d19847b.filesusr.com/ugd/bb3bf9_621f62620056448e8a3aa4f62e61881b.pdf?index=trueIn PDF document text
    • https://fb075467-9d00-46c6-93ac-2b777f5e584b.filesusr.com/ugd/8bcd66_45dcc32014744e5ab08271a9c20fa944.pdf?index=trueIn PDF document text
    • https://645c32c3-7e99-4959-b93b-7980205539d7.filesusr.com/ugd/30a31c_822b35f9871c4160a397dba4d069e391.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 8

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_off00014fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FB5 5136 bytes
SHA-256: 7d6ceaa2eac0e20f0ec068d0f1553420dc8d2a318e10ffe33967e85980d98cfb
font_01_sfnt_off0001610e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1610E 12576 bytes
SHA-256: c8bf7cfdb9da07c344579e86d33be9cddafdc412da10be2634a477eab72d6162

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