Malicious PDF — malware analysis report

Static analysis result for SHA-256 41363842f7071ffb…

MALICIOUS

PDF

71.6 KB Created: 2021-03-02 16:56:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d8366027d28217ee5e37c907bf351136 SHA-1: c6921e198a9058cf7c5220decc2fa2b692cc007b SHA-256: 41363842f7071ffb307f548b0964451a2fd7ba48a62970d1904003323b5b1594
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though partially garbled, contains a search query related to 'kawasaki warranty', suggesting a phishing or scam lure. It embeds multiple external URIs, including one pointing to 'lozipotod.ru', which likely serves as a landing page for the malicious campaign. The presence of numerous links and disposable hosting suggests a link farm used to obscure the true destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/123?utm_term=how+long+is+kawasaki+warranty PDF link annotation
    • http://banuzatama.22web.org/51446373518.pdfIn PDF document text
    • http://mojenisijita.mywebcommunity.org/intex_pool_filter_setup_3_holes.pdfIn PDF document text
    • http://bibopasaxuvibu.mypressonline.com/renilurukevekezekolizi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473638/normal_6036f35e2eda3.pdfIn PDF document text
    • https://cdn.sqhk.co/rezeribevi/bjggfm4/17060669640.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491432/normal_5fde81fb12210.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/doxatuzololaponepa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404103/normal_601b43797c83b.pdfIn PDF document text
    • http://tegeboxurogon.iblogger.org/injustice_2_ios_gear_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470385/normal_5fffcb342b3f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_600dd03544dfe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nisetekotixob.myartsonline.com/what_is_the_best_source_for_stock_market_news.pdfIn PDF document text
    • http://bodegifu.atwebpages.com/demegaforoj.pdfIn PDF document text
    • http://lekugonaj.rf.gd/bhimavaram_weather_report_today.pdfIn PDF document text
    • http://bodegifu.atwebpages.com/mary_rowlandson_a_narrative_of_the_captivity_quotes.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

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_off0000de2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE2E 5072 bytes
SHA-256: 2e4d20f88d7eb394a6ad6a69cfe941e7b448f180ad031b350d0152c6040ba5da
font_01_sfnt_off0000ef99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF99 9992 bytes
SHA-256: bde86c9100398ce7fda2116678d6d334bf6b245a4e9e5844d99eb239cfa06dea

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