Malicious PDF — malware analysis report

Static analysis result for SHA-256 d99355e015278924…

MALICIOUS

PDF

75.6 KB Created: 2021-03-29 05:49:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: efed2080f6f95f14bb1226d825c5dd5a SHA-1: 5414d74ad19182e2bc54d7d3313fb599b41c500e SHA-256: d99355e0152789244c01211f0b69f98c15b18b3b729076e88a7395235775819b
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/wix?keyword=%25D1%2581%25D0%25B5%25D0%25B2%25D0%25B5%25D1%2580%25D1%2583%25D1%2581+%25D1%2581%25D0%25BD%25D0%25B5%25D0%25B9%25D0%25BF+%25D0%25B8+%25D0%25B3%25D0%25B5%25D1%2580%25D0%25BC%25D0%25B8%25D0%25BE%25D0%25BD%25D0%25B0+%25D0%25B3%25D1%2580%25D0%25B5%25D0%25B9%25D0%25BD%25D0%25B4%25D0%25B6%25D0%25B5%25D1%2580+%25D1%2584%25D0%25B0%25D0%25BD%25D1%2584%25D0%25B8%25D0%25BA%25D0%25B8 PDF link annotation
    • http://skout.tech/vudumifozb4wuh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386591/normal_5fc9de668f899.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383446/normal_605d8e1cd66e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464077/normal_6057c7ed86b21.pdfIn PDF document text
    • http://trells.space/zovazisupaloxixugizz9obq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423780/normal_6052e2c8451a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374022/normal_5fee327ce8205.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/fejakixoweka/trigonometric_identities_table_values.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/41311401775.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/jutiwiz.pdfIn PDF document text
    • http://rerojozelas.rf.gd/givavoma.pdfIn PDF document text
    • http://lisotabisalak.epizy.com/ccna_exam_answers_chapter_11.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/a_study_in_scarlet_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/reforma_estadio_barradao.pdfIn PDF document text
    • http://movalezipukud.epizy.com/agile_testing_lisa_crispin.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/kogajawidukolibo.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/mopawokedomezilenunotitu.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/gipudosugaxota.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 7

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_off0000d9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CA 6076 bytes
SHA-256: 59ca0820118787a511d7b4dcc9455f7549894dc62426073097c17fd53bdba568
font_01_sfnt_off0000ed8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8A 15796 bytes
SHA-256: 5cdae58e5b70353a6cbf63384a0a76df13642cf1cade43906e85e3bae0b53e41

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