Malicious PDF — malware analysis report

Static analysis result for SHA-256 1adefe09bdd744c1…

MALICIOUS

PDF

69.9 KB Created: 2021-02-20 05:37:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e88de103828b97ff470a42a66d66676e SHA-1: e161a0e9fa72a32ba3f5e32b38aff32a6e294c01 SHA-256: 1adefe09bdd744c13ecb29bcb8a312a6a3514e73bd247ac6595b2528f8477548
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=kira+kira+summary+chapter+3 In PDF document text
    • https://cdn.sqhk.co/minederepa/ahcia5O/race_tomorrow_at_daytona.pdfIn PDF document text
    • https://zipelademijup.weebly.com/uploads/1/3/4/0/134017001/61b22f2d9.pdfIn PDF document text
    • https://levarimabogi.weebly.com/uploads/1/3/5/3/135328943/sisimediwuluru.pdfIn PDF document text
    • https://cdn.sqhk.co/ziwetuvije/Phaiijc/zakazu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476578/normal_60262ac97c9a1.pdfIn PDF document text
    • http://tk-time.site/gemini_security_system_user_manuall526p.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/aUjhgeV/89312738248.pdfIn PDF document text
    • https://waferipesor.weebly.com/uploads/1/3/5/3/135307907/zaxewakos.pdfIn PDF document text
    • http://copyrightnotices-form.com/valexiwawaxiketno0zl.pdfIn PDF document text
    • http://instapodarok365.site/51825439537iua77.pdfIn PDF document text
    • http://wownatural.fun/alias_elasticsearch_templateo8zoe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444102/normal_5fd3482d63208.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/gXgdirC/transmission_repair_shops_in_tucson_az.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419451/normal_6011bd4f8e413.pdfIn PDF document text
    • https://tovorugezix.weebly.com/uploads/1/3/4/5/134599805/lasigimatak.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/zuses/fraction_word_problems_with_answers_addition.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/4132291881.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/62128632042.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/43907935420.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_off0000d691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD691 5440 bytes
SHA-256: 7b0d24eb82410a8392d38d01eab4632f3cf75065359f06b334d4056e1b70a285
font_01_sfnt_off0000e8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F2 9844 bytes
SHA-256: f1b777d9d62b41ad1bf4e56c79c09b071a0b4c37618b25ce96d3e28f9b884b03

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