Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b0208f35b6cd37c…

MALICIOUS

PDF

82.8 KB Created: 2021-05-24 22:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5e8cbaa92679b8350c869a55d101590d SHA-1: 6f155f341ccec7c6e3b22e6c3930f3547705d81b SHA-256: 3b0208f35b6cd37cfb64933f9419ee7265d97758d6d4d62fdaabda1280a994bf
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 0.9985

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/strik?utm_term=is+facemoji+keyboard+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4406170/normal_5ff94ee275971.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444866/normal_5ff856d6ed7db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493553/normal_6018dd88466ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418791/normal_5ffd2cbcb9954.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494149/normal_6001a9ea120d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485443/normal_600a847eea3a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402944/normal_602563d26cb32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446636/normal_605a68e829d69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450251/normal_60076bdd4f818.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/c840e791-b43d-4511-971c-2dc110c7cc84/41319412020.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/your_promises_elevation_worship_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b723f6d-694d-43f0-a7e9-22cdf97189e8/what_does_this_emoji_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77560a1b-49ab-44aa-abc3-02664d1648ff/pekukexinexaxigefiboxik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea4e11a7-da38-4081-a1c3-c0bf50ed6270/91453751358.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb622b5f-62d3-49d7-865f-73ed0ff812b2/11410979232.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/42259379156.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/akuntansi_sistem_informasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5aa09299-a1b3-4ef1-b098-3798518fb1e5/logo_design_ideas_for_company.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/explain_information_processing_theory_of_learning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48e997e9-7797-404d-b344-24edbc911bc3/how_much_do_naval_reserve_officers_make.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aa4a18a-ba47-4941-8d14-0a747a0f6a8b/what_are_brain_teasers_good_for.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90b062dc-49fe-49ea-be5a-4891e67d2ebd/2166042011.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/21203094201.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE594 5452 bytes
SHA-256: 9cd0e502f60bd551ee02dde5d24e7f98ab881883e9369900a212a926d58415ab
font_01_sfnt_off0000f81b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81B 13056 bytes
SHA-256: b4dfa86efbbe598974b6816a14353d293fe3e1c0bcbaafc42c1352322eb54798
font_02_sfnt_off00012103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12103 16164 bytes
SHA-256: f469c5aa689aa4c1965481b78cfaebbf1c3ebdad2306c7067134b7b4aaa0addd
font_03_sfnt_off000135eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135EB 1736 bytes
SHA-256: 5095ccdfdd328c3f25b1766e9c65bca58fa839170fcb9f3db3c20e130d955aff

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