Malicious PDF — malware analysis report

Static analysis result for SHA-256 5859688851baf98f…

MALICIOUS

PDF

77.2 KB Created: 2021-04-08 19:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1b848b908aec475d1a6cd6f018da805b SHA-1: 563cbd3cdba2472391d8729f2fb0f931acc87044 SHA-256: 5859688851baf98f15b4b9cfa81f58b44e15e3d3f731163ca1ee57175ced2122
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URL that leads to a phishing page, disguised with text related to a 'grilling machine'. The PDF structure and embedded URI heuristic indicate an attempt to redirect the user to a malicious site for potential credential harvesting or further malware delivery.

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://nipisod.ru/strik?utm_term=lean+mean+fat+reducing+grilling+machine+cooking+times PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481286/normal_5fc88eb4a9920.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393889/normal_6025b8482bc89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490736/normal_603452d14f6db.pdfIn PDF document text
    • https://cdn.sqhk.co/lukumuzu/gft9kVs/80570286917.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474445/normal_5fe593c06a4d8.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/gIhf3BZ/excursiones_cruceros_caribe.pdfIn PDF document text
    • http://bapikiboz.iblogger.org/hospital_waste_management_thesis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383450/normal_60228b883f243.pdfIn PDF document text
    • https://cdn.sqhk.co/pafatewodoju/58rHjhf/gogivuwoxe.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/qaO4hfj/mineral_wells_state_park_day_pass.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/rivazixexuguri/14889550695.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/tenuvumaka.pdfIn PDF document text
    • http://wefukuw.epizy.com/jipugopufim.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/pubewozofanigabovore.pdfIn PDF document text
    • http://jazupizewatabal.epizy.com/formal_lace_dress_patterns_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/js_date_output_format.pdfIn PDF document text
    • http://dofovomomame.epizy.com/27013859068.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/24521614818.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/jamawitigaregif.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_off0000ef5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF5A 5440 bytes
SHA-256: bdd1a3a405a126fb66ccb04894bc49c3026bae5aabaab4bc3aaacf6c92a85d7b
font_01_sfnt_off000101b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B3 11160 bytes
SHA-256: 5952c82dd5adc03e3a173be18cf09d869fcf049153b8c8e2e7f56e680a39720e

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