Malicious PDF — malware analysis report

Static analysis result for SHA-256 4806c403f7fa864c…

MALICIOUS

PDF

100.5 KB Created: 2020-11-24 00:55:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2c7e133c4e25fb1b000fbbdf2888a866 SHA-1: 3083d2d39a59bdf4416a872c4103e50f90157599 SHA-256: 4806c403f7fa864cfb960594fe6eae626e04d9b6395b3af921e3c0028bf7afa4
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffine.ru/strik?utm_term=dragon+ball+z+ginyu+force'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier and ClamAV also strongly indicate maliciousness.

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://traffine.ru/strik?utm_term=dragon+ball+z+ginyu+force In 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/629e4185-dfa8-470d-b387-b4edbbe2e1a1/gubuketiz.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/vacay_fever_white_platform_barely_there_heels.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/fawonesexug.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/8644164468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8158f7cd-2a7c-4f8a-8bb2-ebd88ca5b708/64269505849.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae02aa78-578b-4534-ad3b-518ad4735a45/25312716376.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/22915222470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e954e73-d98a-47ed-9f70-e42136238b45/12711251980.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/birthday_cake_with_name_hd_image.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9813b30d-f3e0-4f6f-938a-d802ac9d7850/20624179825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42cd96a4-64b9-485f-8bee-872d4707fa96/fukodegadafut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6931b4c-16b6-43fa-864e-f30ca8494e22/49389997334.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/84163843377.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/55955611251.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/tv_guide_erie_pa.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_off00013b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B4E 5228 bytes
SHA-256: 3cad7e5971df63f8074ff3770f137ebe2f431a9a8443f6e7455ca5c8114d9cba
font_01_sfnt_off00014d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D45 5160 bytes
SHA-256: a4f2819fe1e3a298b48e0e79bf47ef6e2363801d83bd48b35fdf11b8cdff822e
font_02_sfnt_off00015f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F02 11156 bytes
SHA-256: 2fe22bc904000fad801b2afa4916e51c3def062af1741878c90cbdcd0cf5a4dd

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