Malicious PDF — malware analysis report

Static analysis result for SHA-256 8138adf2ecee7e04…

MALICIOUS

PDF

62.3 KB Created: 2021-01-09 16:07:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0c01d45f5b853b055d5b83efe32ef918 SHA-1: 50087979c8992e905598c8a3a5b96c5a74062776 SHA-256: 8138adf2ecee7e04c3407bd11e8288d6b4023bd8f649e635401d2f1d714ca45b
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, traffking.ru, which is disguised as a 'John Deere 1025r service manual pdf'. This indicates a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support the malicious verdict. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffking.ru/123?utm_term=john+deere+1025r+service+manual+pdf In PDF document text
    • https://cdn.sqhk.co/ponesigis/jjghbgj/grand_central_terminal_nyc_map.pdfIn PDF document text
    • https://cdn.sqhk.co/bolomekurufe/PEc7Tjh/monkey_banana_jungle_adventures_dominican_republic.pdfIn PDF document text
    • https://cdn.sqhk.co/tidaxetosi/zjehfeD/le_role_d_un_business_development_manager.pdfIn PDF document text
    • https://cdn.sqhk.co/gumakulex/gjZ8B1k/90250182045.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/d7bb4804-355d-4983-be3d-4a2b7f8473cf/lesupug.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/49712119352.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/68856515426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc349fee-361b-44e8-ae26-5e0993155b34/fumuferapowagidaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dd09688-bfa1-4cd0-bd4e-29a573645072/is_national_test_abhyas_available_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/razukivogabasuvagurenel.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/academic_formation_in_the_seminary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70d1e3e0-3b48-4b8d-ad46-41a2e3d3ce91/download_modern_combat_5_apk__obb.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/35432189188.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_off0000b80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB80B 5892 bytes
SHA-256: 4165d6a341a6d7a4ac9b3c7c5ce1ddd80647d7a9fa06efb64b712754724abbaf
font_01_sfnt_off0000cbfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBFD 9760 bytes
SHA-256: 88f5b8829b36f71588a8fbd104312ed277c96c10b72a005b8b60692d1652b924

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