Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0393ed495787edc…

MALICIOUS

PDF

76.0 KB Created: 2021-04-25 05:14:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7499aa2f9d2119e9e7ca977dc4aaa89b SHA-1: 5b7b7278222ab54b34fe13f082e057eef0f8be62 SHA-256: b0393ed495787edc185c8f611e375b1572d92c6de47175f5e711805b1c01647b
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=how+to+add+kwikset+to+z+wave PDF link annotation
    • https://cdn.sqhk.co/pijovowifil/Jwgdhdr/sonny_with_a_chance_season_3_demi_lovato.pdfIn PDF document text
    • https://cdn.sqhk.co/wireriduwude/hajfidc/16172795094.pdfIn PDF document text
    • https://cdn.sqhk.co/gupimupiset/8Ftifsn/cookie_clickers_2_mod_apk_1._14._10.pdfIn PDF document text
    • https://cdn.sqhk.co/nejijilo/nthgdeX/vubetutuwawuwi.pdfIn PDF document text
    • https://tamukatiraf.weebly.com/uploads/1/3/4/7/134766395/12ef11013eb9.pdfIn PDF document text
    • https://cdn.sqhk.co/zedazisem/hih3ghH/zaxopofed.pdfIn PDF document text
    • https://cdn.sqhk.co/vekotevudoze/ghdiaih/baldur_s_gate_enhanced_edition_android_mods.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/cIBhhgi/56417259253.pdfIn PDF document text
    • https://gobezovix.weebly.com/uploads/1/3/1/4/131454522/nikiwiru.pdfIn PDF document text
    • https://lezogije.weebly.com/uploads/1/3/1/8/131858481/6392942.pdfIn PDF document text
    • https://cdn.sqhk.co/paxepedamaxa/s8gdgdS/popirasux.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/HhgDjeb/34333002369.pdfIn PDF document text
    • https://cdn.sqhk.co/pidodalatip/hejaifd/regression_analysis_articles.pdfIn PDF document text
    • https://lolipakefupixo.weebly.com/uploads/1/3/4/6/134614949/8355883.pdfIn PDF document text
    • https://cdn.sqhk.co/sobekalob/Ajh7She/89750370268.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/la_biblia_hablada_proverbios_16.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ede9ef37-3a93-4828-9f54-adf730f05f70/gtx_970_sli_vs_rx_5700_xt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76a458ff-e8d0-43db-a376-06fd07486b38/2003_saturn_vue_v6_oil_type.pdfIn PDF document text
    • http://zipulosi.atwebpages.com/icelandic_language_course.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_off0000ebaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAF 4916 bytes
SHA-256: 3019b442f08b338aa4cfe44b3dc2d8ce21b5c4df43ba79f06c6d71b851021db4
font_01_sfnt_off0000fc9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9E 11324 bytes
SHA-256: 264142e8ce7a989291ac239635eb811788c32e2d7f38e9ea203c3d12dbfd2670

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