Malicious PDF — malware analysis report

Static analysis result for SHA-256 578397fca9761d43…

MALICIOUS

PDF

68.9 KB Created: 2020-11-19 08:07:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 35205dd9682a0f54f35977e9b6cd962a SHA-1: d1cbae1b9621edfc59dc56fe96288134c498b55c SHA-256: 578397fca9761d43e9a11f8d7b6d625e2811727109738a8cd08335ac76ead1d8
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The embedded links, such as 'https://cctraff.ru/strik?utm_term=love+irresistibly+julie+james+read+online', suggest a phishing or malware distribution attempt. The presence of a large number of external PDF links also indicates a link farm, likely used to obscure the true malicious destination or to spread malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=love+irresistibly+julie+james+read+online In PDF document text
    • https://xemifedawunata.weebly.com/uploads/1/3/0/7/130775780/2048714.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dorulusof/tipupegunujeridelon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47e51d79-53b8-42e3-8ed3-fed7ca3dde0b/9759662443.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/cover_sheet_for_homework_folder.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/answer_key_for_eureka_math_grade_5_module_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea572073-be87-4748-b652-90f4cc33eff5/olympus_digital_voice_recorder_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/girl_scout_cookies_2019_order_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8d7ca0a-9e9c-4049-a6f9-afc6f7829d9c/bumas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c7f501c-1765-4975-8dbb-cec2c95c2c16/29936982228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63d7e359-15bc-46e7-82ff-0c243ef178c7/linux_mint_wifi_driver_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC446 5172 bytes
SHA-256: 0e706b1505e18d18a2c1017120b82e7316153645c63654de27a56807c2c28ca7
font_01_sfnt_off0000d5ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CA 10204 bytes
SHA-256: 50bd3d65a5b87a8786e1a03bf4c1a6b8436f461dfa14a70f9de7ae9300b4ae8e
font_02_sfnt_off0000f8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BD 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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