Malicious PDF — malware analysis report

Static analysis result for SHA-256 241fe49e357418e3…

MALICIOUS

PDF

65.9 KB Created: 2020-11-25 13:15:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 69b2b45d02929a6b2f30205620466a14 SHA-1: b462f95655eb3de08edb98034675b0e8d08155b8 SHA-256: 241fe49e357418e328e7fea6c68ac84e929d37ca846f740a69a25de36486ff0b
96 Risk Score

Malware Insights

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

The PDF file contains a URL that is flagged as malicious and is presented within the document body, suggesting a phishing or social engineering attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect the user to a harmful site for further exploitation or credential harvesting. No scripts were extracted, but the presence of a malicious URL and high detection scores point to a phishing attack.

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://trafffi.ru/strik?utm_term=natural+way+to+draw+out+a+boil PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a187b96-7d6c-4cb1-b881-e7d9eb942876/sezijilazisotemetuvexan.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/1x1_rubiks_cube_algorithms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95416d5c-23c8-4793-aed0-ee02a3a1cef7/mekelalide.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/sesshomaru_inuyasha_fanfiction.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/first_franklin_lawsuit.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/87718564150.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/2701026630.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/pregnancy_calculator_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/windmax_induction_cooktop_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37184bd8-0df3-48d5-912c-fb991a2e9d71/88297813402.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f284f0d-86e7-467b-ab74-f7a7ed0171b1/gujemoviz.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/20451359758.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/inter_1st_year_books_download.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_off0000c7fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7FB 4944 bytes
SHA-256: ee05d09d04a5151957e02c2a91e144044603c430fd40f0ccef9b633539438e6b
font_01_sfnt_off0000d8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F1 10056 bytes
SHA-256: ffe502a3f3aca1163030cb807918e1fe314cfbb89724f8659fabbc9b3527633f