Malicious PDF — malware analysis report

Static analysis result for SHA-256 9585818b7edd7c3f…

MALICIOUS

PDF

70.5 KB Created: 2020-11-13 11:15:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: b0958c464f24f3b3a70f4b5ccad21595 SHA-1: ddb7ea2bb34d8a3dc4a814c3365f5ce8efc59990 SHA-256: 9585818b7edd7c3fb0907dc42814224088c4506fbe40465f0400700b85c28cdd
154 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 routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=vw+polo+manual+reverse In PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/befofobojixubut.pdfIn PDF document text
    • https://newejata.weebly.com/uploads/1/3/3/9/133999860/pepoko_baziriluxosow.pdfIn PDF document text
    • https://tixovokibena.weebly.com/uploads/1/3/4/1/134109053/f98bdd.pdfIn PDF document text
    • https://niwejeru.weebly.com/uploads/1/3/4/3/134308800/siwejutifub.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/4db33b92-3dc1-443a-9c48-ba9c03a736f1/cordero_de_dios_letra.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/applications_of_artificial_intelligence_in_chemistry.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/gmail.com_accounts_login_mail.com.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/i_got_sunshine_on_a_cloudy_day_by_temptations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ecc8fc6-a4c3-4d9c-9675-3c40b3f625e6/40317830659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5070ee0f-702e-4e66-935a-6ef40673b01a/9._snf_kmeler_konusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f18f722-6b6a-4b63-9ec8-9f25c566b5c9/9132442385.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11361598-faa9-4872-9522-2d9eb4b2a96e/baby_beluga_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be3d93cb-f9d4-4e47-9733-6ea31a4d9d52/81225312427.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/gnu_assembler_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63f70495-0efb-4fc3-9b6c-88e75745424a/sababiregafelokipa.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_off0000cba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA1 4836 bytes
SHA-256: e1064cac3f40659ee92dbaec4a379f2f7fd8a80a9ca061fa7e81b50cd0cf565f
font_01_sfnt_off0000dbf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF6 10272 bytes
SHA-256: 3b80ee11bc00bc03697b4985a19aae1865b9a26b167d48e501cf300d5b709f61
font_02_sfnt_off0000ff35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF35 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3