Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49d583cdbe3bee0…

MALICIOUS

PDF

69.2 KB Created: 2021-04-28 00:58:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 9f4e8b6425552101f1be0fd451e5506c SHA-1: 9c9932b68bbd4c526a093abd98fef27165f00f36 SHA-256: c49d583cdbe3bee07738a9239ce7a342b8845cfd2aa103509c7d631d41f59074
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to 'zajinet.ru', which is likely a phishing or malicious site. ClamAV detection and ML classification strongly indicate malicious intent. The embedded URL is presented in a way that suggests a search result, aiming to trick the user into clicking it.

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://zajinet.ru/strik?utm_term=behringer+xenyx+1002b+power+supply PDF link annotation
    • http://merotudonor.mypressonline.com/70071980939.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/ymje5he/luxumizukatal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417037/normal_5fff93e542faa.pdfIn PDF document text
    • http://gipeturira.22web.org/77907191009.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/functional_drinks.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407062/normal_5ff4c50c162f7.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxinugokas/y7Yphee/22338713901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467003/normal_6058d52c16513.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405946/normal_5ff0d13d37f8a.pdfIn PDF document text
    • https://cdn.sqhk.co/vogoxaginoje/bhaia4r/24220275375.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489843/normal_601d3f0507604.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408582/normal_5fc647c2dd24c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391624/normal_5fee0bec02c93.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450878/normal_5fed64e9f1c5a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gupapeveviboga.epizy.com/jugase.pdfIn PDF document text
    • http://botemura.rf.gd/full_size_fire_truck_bed_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/how_to_change_to_radians_on_casio_fx-991ex.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/4677069127.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/primordial_deities_greek_gods.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/12344304916.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/85281247667.pdfIn PDF document text
    • http://vawival.rf.gd/86796646826.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_off0000d03d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03D 5648 bytes
SHA-256: 08773b27f0e883c29d1786acd43f4f122c7e33197e4363b5d8619867ad13a80d
font_01_sfnt_off0000e39e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39E 10540 bytes
SHA-256: a4b927e1cc6219c419bf5d090a7f8b48f117e5062e8eb29cc088bb368d7cd234

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