Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bee3cbfefe7857…

MALICIOUS

PDF

71.7 KB Created: 2021-01-01 06:02:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: e3d0c751362424fe6ea787171d57c534 SHA-1: f5b20e0b3ce33338cdeb078403f28e02e4f9632c SHA-256: 72bee3cbfefe78571644f81a6774cc6e7598654ebaf1aeb57fba406248a2c84e
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://traffking.ru/123?utm_term=colorado+vehicle+registration+fees+boulder+county In PDF document text
    • https://zagozejidenadap.weebly.com/uploads/1/3/1/4/131407028/netenu.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/iajgjj9/nerf_epic_pranks_hack_mod_apk.pdfIn PDF document text
    • https://subokolabipu.weebly.com/uploads/1/3/2/3/132303028/5233e2ab1e.pdfIn PDF document text
    • https://cdn.sqhk.co/susiwozobo/egjjhot/72027613147.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/cGje5w7/74086893644.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/hd2IC70/shot_kill_for_samsung_mod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374957/normal_5f9add2bdf3fe.pdfIn PDF document text
    • https://cdn.sqhk.co/kedezoge/jE9iagf/jariletizotoxini.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/dusined/291804072.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/43352932735.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/vevoxolo.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/wosonojoxobetuwopuzewu.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/23504548678.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_off0000d91a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91A 5488 bytes
SHA-256: 0c579620c9c8e2b3fc7d71b1b042bb372298d20569f4b6b1ec98228f285942eb
font_01_sfnt_off0000ebc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC7 11404 bytes
SHA-256: 45388afe75bbb632c91eabf4dadf9bd0733a78e712bfb58944d00f6ae4d4c103