Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f5f9e7dab5e4dbc…

MALICIOUS

PDF

73.1 KB Created: 2021-03-03 20:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f9089a8665c0982e23ff9810119aca82 SHA-1: b2855ab10ed04c71be3963e04558201b75b42d4a SHA-256: 5f5f9e7dab5e4dbc9b6d114bba360338d9dae4802a77d1ab001fa54349041b0c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to 'https://zajinet.ru/123?utm_term=john+deere+x304+snow+blower+for+sale', which is highly suspicious and likely leads to a malicious site. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The document body, though heavily obfuscated, appears to be related to a search result for a snow blower, suggesting a lure to disguise the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/123?utm_term=john+deere+x304+snow+blower+for+sale PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4427799/normal_6006b4a399622.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497369/normal_5ff6964b3557c.pdfIn PDF document text
    • http://zuzimosutikume.22web.org/93662593877.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/gujepiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_603d0b82e3b74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422135/normal_5fef3599ada5c.pdfIn PDF document text
    • http://borejukeluteva.mygamesonline.org/little_red_riding_hood_book_description.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475872/normal_5fcb7b7f760f0.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/1051527266.pdfIn PDF document text
    • http://puveputado.sportsontheweb.net/hamilton_beach_coffee_carafe_replacement_49980a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476595/normal_5ff5afe2d7187.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459325/normal_5fde2e864b50d.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/beethoven_sonata_10_3.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/fedufiporara/trmovies_2018_tamil_movies.pdfIn PDF document text
    • http://zoxokukazo.epizy.com/27079817051.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/consumer_reports_canada_laptop_computers.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_off0000e01b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01B 5676 bytes
SHA-256: c01e4abd6c4de1d83112c8004f35fa1b2878e9cb6d13b04d56d663dacba309f5
font_01_sfnt_off0000f37b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37B 10608 bytes
SHA-256: 1a7069d71ac4198c3fbad46d0f7e6b5be5aa33155365affed0ee125dd64345d8

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