Malicious PDF — malware analysis report

Static analysis result for SHA-256 a241ac8946470f9a…

MALICIOUS

PDF

68.8 KB Created: 2021-02-20 14:05:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 9b5ba46897e75bd03b4b5f2434aae28b SHA-1: 010333b55f8d1eafb52b44e3eef8e2e79d16888e SHA-256: a241ac8946470f9a2440198f1aa1bd3c6522accf672474efac678de962ed4fc2
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains numerous links designed to lead users to external websites, masquerading as free downloads. The primary malicious link, 'https://yafferge.ru/123?utm_term=what+is+a+pantone+color+chart', is identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=what+is+a+pantone+color+chart In PDF document text
    • http://mivetys.xyz/silver_dollar_city_tickets_discount6x64p.pdfIn PDF document text
    • http://romeita.space/jukibakivoxubipadozshrk6.pdfIn PDF document text
    • http://savadaqwe.space/overture_for_winds_charles_carterk26ut.pdfIn PDF document text
    • https://rubebukani.weebly.com/uploads/1/3/0/7/130740450/jijemedovi_mafuzul_kafanovekobuwij.pdfIn PDF document text
    • https://dazenesulamese.weebly.com/uploads/1/3/1/1/131164173/6d7398cbafcb.pdfIn PDF document text
    • https://lugumeduzox.weebly.com/uploads/1/3/0/7/130740149/somomubar.pdfIn PDF document text
    • https://lezafopiga.weebly.com/uploads/1/3/4/6/134628758/4027762.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451760/normal_5ff919c0654c0.pdfIn PDF document text
    • http://texewofe.22web.org/24577605417.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/kewakuko/zibegenukiwubom.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/lelakasudoseri.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/76917335353.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/suzuxu.pdfIn PDF document text
    • http://xetobagog.rf.gd/worukibutatorubunesuvewu.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/best_figma_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/pedeta.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_off0000d23e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23E 5032 bytes
SHA-256: 50fa2a4f968300d0de4cad032f9568292f58c69bea9617ec6c7b4eea6e036fd6
font_01_sfnt_off0000e35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35F 10352 bytes
SHA-256: 719450936c518064b86702ea016f20c2945a5afc2996804cb2aeb0ed1d6dd7d8

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