Malicious PDF — malware analysis report

Static analysis result for SHA-256 422eec1a30f3bbee…

MALICIOUS

PDF

83.7 KB Created: 2020-11-11 01:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 0a9e652774ffdb6666e6672331fc1878 SHA-1: b527166aca9e41cd426c5db36c74e261014b1684 SHA-256: 422eec1a30f3bbeee7fc77b37c9430b3d7a8a73d105341e5d524c4facebf4c18
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL, 'https://trafficel.ru/123?keyword=casual+argumentation+definition', which is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains metadata related to its creation, suggesting it was generated programmatically to facilitate this redirection.

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://trafficel.ru/123?keyword=casual+argumentation+definition PDF link annotation
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/marobonod-gabupukewow-jevelasonu-dunepoje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420617/normal_5f9a0c7117cee.pdfIn PDF document text
    • https://gajokazatiduker.weebly.com/uploads/1/3/4/3/134320060/6004655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f95cfb7da7f2.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/luwemafabasiv_memekamunef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426410/normal_5fa2244a949a0.pdfIn PDF document text
    • https://sonefuvik.weebly.com/uploads/1/3/4/3/134325549/03eb0f691fdc8a6.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/785dba3d-ca8d-4448-acdc-b495d8adc84c/lobolenadipuvevoserupifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95ef0b22-1339-4a57-8a56-04f6e6410b7e/white_pages_naples_florida_lookup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a2a18b4-803c-4587-bea1-d398605f6210/wixagovo.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/wiragasevabixig.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/solving_equations_by_substitution_worksheet.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_off00010aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AED 5132 bytes
SHA-256: 5f3bea237a911edcf2c6d02bb189f63b99ba759e178405fa3b2026811560985a
font_01_sfnt_off00011c46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C46 11220 bytes
SHA-256: c05ad8088e237818efb86fbb31768ae7ec5ccbe8d97d190780a6b0daaf026ede