Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ceca579af4aa45a…

MALICIOUS

PDF

78.1 KB Created: 2020-12-01 00:08:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b9a9859d60f392348cfd71dba5e1448a SHA-1: d836bee7470041da33424bdc778b377a151e3af8 SHA-256: 9ceca579af4aa45a5e8c7b99d82adf27983e8b26c748102d5766902df38820a8
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 0.9996

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://traffset.ru/123?utm_term=best+civil+engineering+books+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408002/normal_5fbbaea30c8b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393183/normal_5fc37dc564dd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373985/normal_5fbe9896d2081.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370077/normal_5f9e3276e4257.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5fa3711687fb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459180/normal_5fa1780659aea.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/ohio_county_numbers_on_license_plates_list.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/datubapaxeguwije.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/35853156221.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/bharat_acharya_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4e870a6-3fc3-4d95-aa1b-75a923551557/mezutabunibememaberovado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60373482-4b0a-406f-b341-499244c55b9a/sovojojizoxo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00635ff13940aa23ad6dd/t/5fc3b120fa04221c7190c7a6/1606660384962/mifuseza.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/xujagowugevikola.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD019 2952 bytes
SHA-256: cb9072f881c1fe0ad8900bbcc5a20a23fabb306412f64e001cac76c2a9509f2c
font_01_sfnt_off0000daa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA8 5384 bytes
SHA-256: ab647742419a30f04dedf9f80d7e0beb89e336598a4939ea5571898a40495e78
font_02_sfnt_off0000ed0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0B 2664 bytes
SHA-256: 40d4dbdcc0255b1eff07ae2d61b53bc29a927c1b7aca4abfc6ace0d56ad75950
font_03_sfnt_off0000f886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF886 10628 bytes
SHA-256: 06939d63b1632bf59745519d44033d5d861bc70a3bcbedbe7b871b9d99b2c323
font_04_sfnt_off00011ca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CA1 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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