Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef8ebcf9b9a65478…

MALICIOUS

PDF

80.3 KB Created: 2021-03-09 20:52:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a83cee5c1d38e7c72f8d4cbc70761dd1 SHA-1: f289f398c7eecf077dbb21e7eb2654167b05fe2c SHA-256: ef8ebcf9b9a654787d947763983d73921944f8e2b48c6c4242d3997541b2da4d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of external URIs suggests the document is designed to redirect users to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xajibur.ru/strik?utm_term=convert+wav+to+midi+ableton PDF link annotation
    • http://barberking.best/vosowuwanixefel1npl.pdfIn PDF document text
    • http://mnogolidov.xyz/pomeworomiu9ncy.pdfIn PDF document text
    • http://erse.xyz/bogomopituzumopeuikf.pdfIn PDF document text
    • http://reznitskygallery.com/zorevexizpt5b.pdfIn PDF document text
    • http://pe50off.pro/81487772860edz32.pdfIn PDF document text
    • http://bukudix.getenjoyment.net/lezimoje.pdfIn PDF document text
    • http://svarka-aurora.online/64479678056d54f8.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://uploads.strikinglycdn.com/files/bdda856b-0c2a-4252-abb9-6c800b9290ca/bofupi.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/decoracion_navidea_manualidades_para_vender.pdfIn PDF document text
    • https://591379ed-26d0-4405-baa7-5b8dadede013.filesusr.com/ugd/866ffa_88057454228f48b99e649b18307fa779.pdf?index=trueIn PDF document text
    • http://satawakerexe.atwebpages.com/how_to_cook_a_brined_turkey_in_an_electric_roaster.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/42595921585.pdfIn PDF document text
    • http://zimopup.myartsonline.com/30399982126.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/88621160175.pdfIn PDF document text
    • https://19e6fc83-c281-4d06-93fd-e8b16a02b90a.filesusr.com/ugd/ce5d00_5b8c09dbc07e43a4b30649978aa6e157.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7944b839-8e13-4b6b-9926-2c881b2ef189/how_to_use_ti-36x_pro_scientific_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/maria_montessori_books.pdfIn PDF document text
    • http://gubadif.myartsonline.com/nikaxebelilevejojopako.pdfIn PDF document text
    • http://nojikigor.myartsonline.com/26379241260.pdfIn PDF document text
    • https://6997f972-013f-4c6f-ac95-4179ba17a557.filesusr.com/ugd/549e1a_fabca30fde4441beafb3a40e2520a505.pdf?index=trueIn PDF document text
    • https://2a4b29e6-a790-453e-81e7-e8b9caf2c27b.filesusr.com/ugd/bf0735_d1dbe9f7003442f0b7c596865ce734ec.pdf?index=trueIn PDF document text
    • https://6e8b94c7-278c-4a65-9c30-8d61c93a8f31.filesusr.com/ugd/9ff9b8_10056042b0f24779b0c2db186b9fbede.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/what_are_the_requirements_to_join_the_coast_guard.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF233 4896 bytes
SHA-256: 698b4612b263e91fcad558e3935ec73a64422dbd71e724e8c9db270ba023abe0
font_01_sfnt_off000102cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CC 10304 bytes
SHA-256: 6bc061cd6cfd4af58d89fc1e28536996569c706719b41bb11da03b68fddb1f6c
font_02_sfnt_off00012592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12592 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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