Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ad4318c998f90a…

MALICIOUS

PDF

72.5 KB Created: 2021-01-09 19:56:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fc946a2d40036ead2f1bc3ad4eebd4f6 SHA-1: aeeb8cc5c33d0c8d484ccbd8eb78e1af28d642eb SHA-256: 04ad4318c998f90ae475fb28170fce33653785db64c4c91dd307c17e086b8a6a
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by multiple heuristics and a machine learning classifier, indicating a high likelihood of malicious intent. It contains a large number of embedded URLs, with at least one pointing to known malicious redirector infrastructure. The presence of these links suggests the document is designed to direct users to potentially harmful websites for phishing or malware distribution.

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://cctraff.ru/123?utm_term=3+houses+skill+guide In PDF document text
    • https://static.s123-cdn-static.com/uploads/4426832/normal_5fe06fbeda586.pdfIn PDF document text
    • https://vuzaruluweketex.weebly.com/uploads/1/3/4/4/134478477/vinadeku_gusokuwuw.pdfIn PDF document text
    • https://cdn.sqhk.co/gorusuvu/GvhhsVl/life_is_strange_2_episode_5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381759/normal_5f9161be07fd7.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/j5jfmia/naruto_ninja_blazing_tier_list_2019.pdfIn PDF document text
    • https://jozufibajas.weebly.com/uploads/1/3/0/9/130969385/4257873.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/gvhd7AS/low_uncertainty_avoidance_culture.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497369/normal_5fbd8172231af.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/gihagcl/bdl_top_up.pdfIn PDF document text
    • https://cdn.sqhk.co/muvasesuru/GjfiibR/short_funny_videos_for_whatsapp_status_download_tamil.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/medaliwifufugel/garifepav.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/browser_vpn_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/brookfield_primary_school_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/s_p_ka_full_form_kya_hoga.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_off0000e091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE091 4916 bytes
SHA-256: 22371326f8b77c8a8648b63a6ec2a0bb2e5b992d2ee22dc26cce372be3908c26
font_01_sfnt_off0000f147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF147 10572 bytes
SHA-256: 049656726ef9728bb73bdf2d72143cee19651b53dc9c6477f6af97308d0db1ce

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