Malicious PDF — malware analysis report

Static analysis result for SHA-256 d294b63d30a0331c…

MALICIOUS

PDF

72.0 KB Created: 2021-01-09 17:37:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 3a362804446ee82136ae10e82011a07c SHA-1: 340facfa88296a9b27cc51a4da5703b4f3571f30 SHA-256: d294b63d30a0331ce89f30163c8261e3483a52386f316476f85f0afe73685f27
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to 'famous biologists and their contributions', a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/aws?utm_term=famous+biologists+and+their+contributions+pdf PDF link annotation
    • https://cdn.sqhk.co/kixarozikej/jbvheca/banamomijimutemorupobodoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482631/normal_5fd82610777de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368788/normal_5f954650521e6.pdfIn PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/taxonef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367617/normal_5f899bcc1863b.pdfIn PDF document text
    • https://bemetapijulew.weebly.com/uploads/1/3/1/4/131437656/ad755b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385009/normal_5faa50df2877e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473902/normal_5ff62066b7230.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387244/normal_5ff3b1a9177e1.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/EjgiamF/swift_dzire_suspension_bush_price.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/wQhficd/munibuju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b465211-a9d8-4457-97da-0c098261b3d4/morning_has_broken_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e778c8a-5d3a-4fad-ab04-cd6d65201270/25265498853.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_off0000dc33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC33 5664 bytes
SHA-256: 1473a6ff39832f970177e85e1cbcdb6f761a0f6f6b4283987424518049c09e56
font_01_sfnt_off0000ef52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF52 10452 bytes
SHA-256: b7edb659bc75cb587a3aa021fbff0fff2b68bafed1f99936bec0306aa6cfc943