Malicious PDF — malware analysis report

Static analysis result for SHA-256 dac75d4213608bfd…

MALICIOUS

PDF

67.0 KB Created: 2020-12-18 04:35:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 72727c9f1594dd65778dd462fc79c49b SHA-1: 93513f7125aaf58012f903ac6ad266d3a1524109 SHA-256: dac75d4213608bfde9511605ac227c78d0778cd3cd4ff23b7f6496b57f033338
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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://cctraff.ru/123?utm_term=mens+duffle+coat'. 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 also strongly flagged this PDF as malicious.

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://cctraff.ru/123?utm_term=mens+duffle+coat In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393370/normal_5f9eaa0cd28b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372100/normal_5f889da4678ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460690/normal_5fb76d96b2946.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5f8f529404784.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409255/normal_5fbc95c9e8c03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421939/normal_5f9c6208ca1e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/wordpress_footer_template_code.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/80065379614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/150cfae8-0623-4976-ad5b-3e2bdf7cafc8/8479631057.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6baad657-c156-4bea-9d10-ba8163a33b01/buwiluzelamutesivi.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/can_am_defender_service_manual_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/kunovuwomapug.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/brochure_making_software_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/good_morning_shayari_photo_share_chat.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_off0000cc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC16 4924 bytes
SHA-256: bb273f444619940cebc7b0a80b7b21b6d30acec41b7434bf3935b662fc35de69
font_01_sfnt_off0000dcfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFB 10148 bytes
SHA-256: 750e54dcca326bf434518d08cfe7d8d3b33aad57b9bcf5f99dce9a2b94e7c86d

Open this report in the interactive analyzer, or submit your own file for analysis.