Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab124e86dce819d7…

MALICIOUS

PDF

73.0 KB Created: 2020-12-17 21:39:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5aea6e32860a4f2eac7d4a9502158db4 SHA-1: d36719db59f869315eb4bfd2c355e35b51c84fa7 SHA-256: ab124e86dce819d78b242e93037db9391f9b92cf1a20b99d9af423fe2f178fc6
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also flagged it with high confidence. The embedded URL 'https://cctraff.ru/123?utm_term=moguri+mod+comparison' is the primary indicator of malicious intent, likely serving as a lure for phishing or to download a secondary payload. No scripts were extracted, but the PDF structure itself is indicative of malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://cctraff.ru/123?utm_term=moguri+mod+comparison In PDF document text
    • https://ferateritilew.weebly.com/uploads/1/3/4/2/134265971/zuxekozix.pdfIn PDF document text
    • https://mibujisoj.weebly.com/uploads/1/3/4/5/134525757/vidupadovoxojemiwege.pdfIn PDF document text
    • https://vajoribenokajug.weebly.com/uploads/1/3/4/7/134713142/niliniju-xiwilaxewita.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473049/normal_5faf8f202e41e.pdfIn PDF document text
    • https://fadefewili.weebly.com/uploads/1/3/4/3/134316521/6662501.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/8049d918-326d-4c50-8622-7af3a5d64769/how_to_dry_parsley_in_the_microwave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e641ce04-80dc-425d-ad51-8d93e280bbaa/flipaclip_free_download_for_windows_7.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc286186609fd0ee79bb78a/t/5fc4ecdc3c6ccf69f3f91aff/1606741213371/705176122.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/040f6591-8d2a-4874-adf8-7e2c2f8e558b/62877727982.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_off0000de9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9E 5368 bytes
SHA-256: 2fd9d8bfe03f31b162207d6a0a19b9b693daa059758aa171e129da8499715d04
font_01_sfnt_off0000f0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D4 11488 bytes
SHA-256: 03eed5a6fa309a5ac6977f239d64343c04371ca93de07f29e50aaae9da4ca1cd