Malicious PDF — malware analysis report

Static analysis result for SHA-256 966369ed2fd4b83f…

MALICIOUS

PDF

76.7 KB Created: 2020-12-27 01:16:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c1f755767aa3f5f0041fe9265f3d64e5 SHA-1: 7b943487ebc03b08610b03f85579deffd67581a9 SHA-256: 966369ed2fd4b83f305be00f8173a350d0cb6fcd0a0bd34455177595d59592b2
214 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector and a link farm. One of the primary URLs, 'https://traffmen.ru/strik?utm_term=rolling+stone+top+500+albums+list+pdf+2020', is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to a "Rolling stone top 500 albums list pdf 2020", indicating a phishing or scam attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffmen.ru/strik?utm_term=rolling+stone+top+500+albums+list+pdf+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4390374/normal_5f9c5de964bcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_5fbe9aab6a08f.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/idjhgjA/gepesakejalapopiva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_5f8e8af601186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415527/normal_5f948ba26d5ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413867/normal_5fc4694abaf0a.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/a8c5456bfbd.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/d0055851-1bec-4713-9c77-45dbe5d35550/29172426789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfb93761-7995-4625-9cf1-5abe4588b8fb/starfinder_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1944d2e8-c0e1-4e52-88bc-54bb461bc1da/33049207606.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc01a37a-042f-4e96-b67f-93203d7536ec/19577662579.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b34009f-9da2-495a-a5be-9fb4dc0ea04a/9454962371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77dd4c6b-5e97-4e2b-94b0-f9c3b655cf19/enpc_4th_edition_practice_test_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bd9810d-b278-416c-a3a1-10d6eb815ea5/microorganismos_en_agua_estancada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1e6a8f7-7678-4e59-a011-f5b641395000/auto_reply_email_sample_for_customer_service.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc860f97-4127-4b63-8695-9737c531aa7f/vhs_and_dvd_openings_1000_poe.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_off0000e8d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D8 5812 bytes
SHA-256: 617315e210eb8867012723e2a0118c72d2ef35383fed5d6847de46e4c6475980
font_01_sfnt_off0000fc9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9D 12372 bytes
SHA-256: 86cdcfdf77a3b595eb6f45a9789b075a51099c98c9a7dff96d245dcfaf7a1921

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