Malicious PDF — malware analysis report

Static analysis result for SHA-256 7607895f5b0bd7ec…

MALICIOUS

PDF

75.3 KB Created: 2021-03-01 09:21:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2ea5ff7dbe552a5bf8da1536c89549e1 SHA-1: 0921c19e9a107b7e28dd8894ef46630504095509 SHA-256: 7607895f5b0bd7ec0a2e8acdd34a500a8865562a3bd9fb1579a44d5c70de84d3
96 Risk Score

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-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=best+cb+antenna+for+cobra+29+ltd+classic PDF link annotation
    • http://digosige.mywebcommunity.org/buwelefawavidemafukubob.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/ihaifif/zuzapexuvoto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410006/normal_60243e3ec525f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379856/normal_6010a0fbcb898.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473432/normal_60334b62bf969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391326/normal_600f137eb4880.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/13890354384.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/reduce_size_mac_acrobat.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/mezufuta.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/clases_sociales_en_la_epoca_colonial.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/application_format_in_english_for_college.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/scholastic_vocabulary_packets_greek_and_latin_roots.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/27774769089.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/bartender_10._0_software.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/basic_flatmate_agreement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/62340002799.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/parallelism_error_worksheet.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_off0000e7eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EB 5492 bytes
SHA-256: b52ee255b4b3c22883a8af8420e5b9c3a8fe45ebee530cffb8662f9e198db856
font_01_sfnt_off0000faa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA2 10820 bytes
SHA-256: 44d1b00d9c3ad8aaa07eb67b2092318385ed1767ebcba742e8d2562367920ad5