Malicious PDF — malware analysis report

Static analysis result for SHA-256 19109656dd6757ac…

MALICIOUS

PDF

70.1 KB Created: 2020-12-05 10:13:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: ace02919eae84aaf96f03bca2030358b SHA-1: 4ab26696a0e4875257ec873f4b90292a4168ba84 SHA-256: 19109656dd6757aca1ed9aebb7ade649368edde79ffd39898dc29e159606680f
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gettraff.ru/wb?keyword=thickness%20of%20150%20sheets%20of%20paper In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379473/normal_5f8e92299bb73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459941/normal_5fc571188c625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403428/normal_5fbb399f6075c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413347/normal_5fba4fd942ae2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369493/normal_5fa22e6847e11.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/vofefolipezi.pdfIn PDF document text
    • https://sowufaxekip.weebly.com/uploads/1/3/2/7/132710719/suravetajarefi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390996/normal_5fae692977094.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375522/normal_5f90fac7e2c96.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489599/normal_5fc9a2af9bc6b.pdfIn PDF document text
    • https://vufuvato.weebly.com/uploads/1/3/4/7/134718288/mobeno_tutik_jaxinubime.pdfIn PDF document text
    • https://juvikenozenukun.weebly.com/uploads/1/3/4/3/134322787/3064002.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/webipejonavuv/35039373293.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/facebook_lite_app_for_android_mobile.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_off0000d4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CA 5400 bytes
SHA-256: d9e3ab4f0d9434d318b75bd912acc2d0eb6d36e6d78313d00409e551347676bd
font_01_sfnt_off0000e72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72F 10764 bytes
SHA-256: ed307602947e7bcf54b7df21b148664785edf2d669147052c9ee803f76765508

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