Malicious PDF — malware analysis report

Static analysis result for SHA-256 634a80616f264c13…

MALICIOUS

PDF

74.5 KB Created: 2021-02-13 16:27:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-29
MD5: 22b04cb9f5dc69976e23179142f1663d SHA-1: b50b058716d395618976ee44c6a06eb4c6b3821d SHA-256: 634a80616f264c1302342cf7143ebeb7808a8b4e397393e85b981455b456f5b0
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://s3.amazonaws.com/dazutun/jewul.pdf In PDF document text
    • https://cdn.sqhk.co/rodesedaded/VZkpbFn/5060831772.pdfIn PDF document text
    • https://zetojaxonafavop.weebly.com/uploads/1/3/5/3/135309172/6456ebc0.pdfIn PDF document text
    • http://raisinsapp.club/niroxufonivodoxixebqw.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/chota_don_video_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/gunexuwolarobe.pdfIn PDF document text
    • https://cdn.sqhk.co/lixejudazeza/if3oibY/48374217807.pdfIn PDF document text
    • https://rarerosedipise.weebly.com/uploads/1/3/4/8/134876587/vidinuz_vuwuluganetatub.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/game_development_software_free.pdfIn PDF document text
    • https://xedasijaw.weebly.com/uploads/1/3/1/4/131453620/142e62f1f989.pdfIn PDF document text
    • http://homebig.space/71291330870dfr8a.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/sCS85ja/blue_ombre_acrylic_nails_short.pdfIn PDF document text
    • https://cdn.sqhk.co/difanemifal/gg1jgZj/motafejufifajoje.pdfIn PDF document text
    • http://buzifun.22web.org/17228484532.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407086/normal_6016929e6c474.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/jc2PhjS/22585284730.pdfIn PDF document text
    • https://yafferge.ru/wb?keyword=cd%20ile%20format%20atma%20windows%208In PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000daf7.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000daf7.bin)
    • http://nenidexixod.epizy.com/kalai_vanakkam_photos.pdfIn PDF document text
    • http://fomobiwudaz.rf.gd/13404107487.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 extracted file (font_00_sfnt_off0000daf7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF7 5244 bytes
SHA-256: 5b03ef7dd4d55dff16e344697b959546789b01d5672ae2dd8f5c789b86952d57
font_01_sfnt_off0000ecb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB1 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000f53f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53F 11912 bytes
SHA-256: 899b5a6dd70e5a7bb8b1f4e87d3ecb79a28fa6c9b741a07f22b289579dfa30e5