Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5937250f0e775a1…

MALICIOUS

PDF

76.7 KB Created: 2021-03-25 07:18:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 80fe1f6436006995b10b6d1743769ebf SHA-1: 63e100e486d52cdaabac3cfa09dde1986fa60bf2 SHA-256: e5937250f0e775a1dd7d42174d223af67a8097cd050536f0c257f1c42e4fcf9d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a site related to diet information, likely a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. The presence of external URIs suggests the document is designed to redirect users to malicious content.

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://xezojetit.ru/strik?utm_term=what+to+eat+on+a+low+purine+diet PDF link annotation
    • http://buwovavozu.getenjoyment.net/world_famous_buildings_and_their_architects.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474169/normal_602efb9238591.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446942/normal_600e6ed53a30c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455901/normal_5fe1b18018a21.pdfIn PDF document text
    • http://fodelogutejamit.getenjoyment.net/territory_sales_manager_job_description.pdfIn PDF document text
    • http://bukapim.mywebcommunity.org/zerigalasu.pdfIn PDF document text
    • http://gedozudusinap.mygamesonline.org/telemetry_system_in_power_engineering.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383915/normal_5ff47340642a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464878/normal_604f9930c6816.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jasosuwer.epizy.com/chahat_album_songs_ming.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/dagajizu.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/zumokutefasenen.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/94870046888.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/argos_extra_deep_fitted_sheet.pdfIn PDF document text
    • http://dexexofavigemil.epizy.com/rusekezozadu.pdfIn PDF document text
    • http://sarigeselos.epizy.com/75360638649.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/99991088540.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_off0000f026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF026 4972 bytes
SHA-256: 4f21a575023c48c2847115442d17a873010bdbfcfc08689bc2d9c5d58e77d990
font_01_sfnt_off00010122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10122 10888 bytes
SHA-256: 50bc212018922c6adb9307126e7ea05b215ecd63db7a6ea9d072e46c0b22f70a

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