Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfcd9eed5986e509…

MALICIOUS

PDF

78.4 KB Created: 2021-04-16 11:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 630823c254c85584c40ce6d491a0ec5b SHA-1: 55834f6eca835325cf95088a45ee0123bf3b8348 SHA-256: cfcd9eed5986e509788032213835c33e268f8e8fb1625f654e76a3020395808f
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/strik?utm_term=how+to+get+blooper+link%2527s+awakening PDF link annotation
    • http://latuha.com/bengali_letter_worksheetxkkz6.pdfIn PDF document text
    • https://cdn.sqhk.co/pafevola/iheji0S/99881804284.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_60465fa30c858.pdfIn PDF document text
    • https://cdn.sqhk.co/butemobe/b3IADgf/39733796862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385216/normal_605cb106e314e.pdfIn PDF document text
    • http://nakrutkavk.site/hearts_of_iron_4_mods_folderml2a5.pdfIn PDF document text
    • https://cdn.sqhk.co/xagogowan/M2hfgge/6707415745.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367617/normal_60512325a9d9a.pdfIn PDF document text
    • https://cdn.sqhk.co/tanusulirava/eysxhjs/tiwibodegovidi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500438/normal_5fc7a91cb26a7.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/1815626187ksz7c.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/fefurorobumi/resume_template_for_pages.pdfIn PDF document text
    • https://6b52f5a6-db44-4d3e-8337-ab33c729cb13.filesusr.com/ugd/f4de5e_87191aaaaaa9431a8f839f71dfb6a440.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mejifavo/33369822794.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/nawusezinogokexexodijebem.pdfIn PDF document text
    • https://5563968e-3cf5-463b-8312-7915ab8a4794.filesusr.com/ugd/cd90d1_ab45b2635dc640679caf3dc6d5be199b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/mojugamezimaxe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE899 5068 bytes
SHA-256: ad0b1eea5faeede9e0b2693d8518baaf1be6c50e2f7305ce483c4fd8eee24ce4
font_01_sfnt_off0000f9f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F0 10692 bytes
SHA-256: 9d34ba4aa805054edcf3315011a74f565fe2c06275f59b126bf5ab9488eff2b0
font_02_sfnt_off00011e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E4F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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