Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5462317e510aecf…

MALICIOUS

PDF

74.5 KB Created: 2021-02-19 15:13:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d681b48cec2f0e9dd82c317c495553be SHA-1: 3e3e0e6f5965e6386e13920eaefdabafcbeea574 SHA-256: b5462317e510aecfb0ceeb5deb782d60662919f8d606b61886f3fef134fd2731
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to known malicious redirectors or link farms. The heuristic firings indicate that this PDF is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. While no scripts were explicitly extracted, the nature of the embedded links and the ClamAV detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/123?utm_term=material+safety+data+sheet+pdf+in+hindi In PDF document text
    • http://priz24.site/65921765559rc83u.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/hfiicxQ/e_learning_for_all_brainy_baby.pdfIn PDF document text
    • https://xobagesimijuvu.weebly.com/uploads/1/3/0/7/130776740/nutokidaku-zulewageruv-getirugin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420775/normal_602ef7b7a650c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458854/normal_602f5de6ad873.pdfIn PDF document text
    • https://xogosafaxisomig.weebly.com/uploads/1/3/0/7/130739024/vuvaden.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/jxkijpJ/my_singing_monsters_diamond_hack_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403814/normal_5ff582b99107a.pdfIn PDF document text
    • http://jasapremium.xyz/sajakemefoletabivabaje9t5h2.pdfIn PDF document text
    • https://bufudelazevel.weebly.com/uploads/1/3/4/7/134734798/105bca.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/baposivarabuj/29301902647.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/3098578271.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/us_visa_application_form_cameroon.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/free_editable_blended_family_tree_template.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/handbook_of_metal_forming_lange.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_off0000db0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0E 4916 bytes
SHA-256: e374055d6958ee3a0a080f14548efe66a52160c3441cdd16fc4449351778f956
font_01_sfnt_off0000ebb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB8 10264 bytes
SHA-256: d1e2e2ece777d5dd4c740ce9903e2465a00fd4f97c7c010c177ed61d431b01ce
font_02_sfnt_off00010ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECD 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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