Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ae2c14bc90f7133…

MALICIOUS

PDF

48.0 KB Created: 2021-01-01 02:56:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a6950caa6af11862b001cf2bdc3e208 SHA-1: 36c65832f7ebbf0e589e2e2f1261bc54d3c20aef SHA-256: 0ae2c14bc90f7133d902d0462edba9b78814b23003575840cf243881fcec46f8
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to disposable hosting, and one specifically to a known malicious redirector. The document body, though heavily obfuscated, contains text related to job searching, suggesting a lure for phishing or malware distribution. The presence of numerous links and the malicious redirector indicate an attempt to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5269

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?utm_term=assembly+line+jobs+dallas+tx
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/63d400e.pdf
    • https://xopavomubikun.weebly.com/uploads/1/3/4/8/134879687/gizifokodezot.pdf
    • https://xupijologa.weebly.com/uploads/1/3/5/3/135327862/zugejilot.pdf
    • https://waxokevamumom.weebly.com/uploads/1/3/4/8/134876143/sejabexefepisawigu.pdf
    • https://static.s123-cdn-static.com/uploads/4370542/normal_5fc4cc2e5e792.pdf
    • https://sikewebuki.weebly.com/uploads/1/3/4/3/134387003/vesuzimesovekiwo.pdf
    • https://cdn-cms.f-static.net/uploads/4446155/normal_5fbbf8b632d24.pdf
    • https://cdn.sqhk.co/semejegofip/saicvjh/49804089359.pdf
    • https://uploads.strikinglycdn.com/files/b510d753-9a8e-4dab-958e-9449e1ace5f1/linear_transformation_worksheet_1_answer.pdf
    • https://uploads.strikinglycdn.com/files/b5968673-1454-49a2-adad-677f40a4a8d9/download_death_worm_free_mod_apk.pdf
    • https://uploads.strikinglycdn.com/files/53a92f09-fa2d-47ea-ad5e-ee88f93bd40c/fofurudoban.pdf