Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb214915097f359f…

MALICIOUS

PDF

91.5 KB Created: 2021-03-19 17:51:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0f304f65a3bf47ca1ce6f86424bc90d3 SHA-1: 5ce2d23c44392af6af207afb67f3e2c62cdbc8a2 SHA-256: eb214915097f359fdc6f8e94c6e4a7b9ffb4b92d3885cb84d9bccb6ac552dc27
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 0.9998

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://jumiwimov.ru/strik?utm_term=example+self+evaluation+essay PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450428/normal_604b1c6e379cc.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/ikjb9hh/38445335593.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464871/normal_600bf2d2af483.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/jhge4t6/63162077755.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/dWtGqgf/35455350471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485163/normal_6036acd0bc98f.pdfIn PDF document text
    • https://cdn.sqhk.co/xedasuzefer/gejjifn/radley_bubble_dog_large_backpack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414332/normal_60377e514cc9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457561/normal_5ffdc7ca82460.pdfIn PDF document text
    • http://pihodze.com/words_that_start_with_semi_8_letters421wl.pdfIn PDF document text
    • http://naturaitalia.space/reddy_heater_pro_110_repairu43yf.pdfIn PDF document text
    • https://cdn.sqhk.co/bumogebiz/gcd9gdD/81430504622.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/ce91678a-a658-4aa4-96ca-8d73b4ff5ff2/developing_the_leader_within_you_2.0_by_john_maxwell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06cd3613-fc4e-44e2-aebb-a0fcc3b6b47b/82863539711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33055967-6122-47d1-b829-125a662111a9/41581587316.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1350549e-1469-44ce-9355-786cbd165abb/xererexifepen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53e36e0f-d665-4301-b7f9-8d6bdd838d90/88387170808.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09adc6d9-652f-4600-a7d0-c233be5f6ddb/bobevanexifur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c0f561c-918a-4131-81e3-a91d104394a7/usc_computer_science_undergraduate_degree_requirements.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ace047b0-3a7f-4de1-baf3-2581eba11981/creature_from_jekyll_island_review.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_off00012a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A14 5136 bytes
SHA-256: 7046678f590eb3580b3a66f5f2dac72bc042ffb801e0c979b11bf82f709d0e8e
font_01_sfnt_off00013b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B94 11044 bytes
SHA-256: 6c5637e49c52a398b061df20324b5ab938c2afefddb25a9299352a99eac26289

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