Malicious PDF — malware analysis report

Static analysis result for SHA-256 4452739d75eb58c4…

MALICIOUS

PDF

79.2 KB Created: 2020-11-20 04:12:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-11
MD5: 7fb4553b96c359c2747fead1a8a613a9 SHA-1: e121e53fcaeadb527fb3f3f11e3191329566bd8f SHA-256: 4452739d75eb58c40b9f63f4e7803b4e48b8547ba9d236a87428345b26325156
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/123?utm_term=growing+snow+pea PDF link annotation
    • https://jerezuwiwufuken.weebly.com/uploads/1/3/4/3/134355676/8254132.pdfIn PDF document text
    • https://zuxutupod.weebly.com/uploads/1/3/4/5/134587355/7672270.pdfIn PDF document text
    • https://pobafegesodagiz.weebly.com/uploads/1/3/4/3/134305133/7503741.pdfIn PDF document text
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/wofoseluwu-nesulowowi-pufimatu-gaduf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401546/normal_5f90f407565be.pdfIn PDF document text
    • https://valuluxunu.weebly.com/uploads/1/3/2/7/132710491/lozamu.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/pomaxa/zexufelepulavowuzoso.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/16031585286.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/article_371_j_of_indian_constitution.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/kusijikugomepokekusumejuv.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23B 5080 bytes
SHA-256: 2d15d95c11a23b1bcc83375cebd14b23c5a95377f5dec9c636b7bf8accf74163
font_01_sfnt_off0000f3b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B1 11292 bytes
SHA-256: d528ef45e08ae64d98d2ff8ba374caf211d234876c3bd9d1ad5cb7e28c3f9ad8
font_02_sfnt_off00011a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A47 16312 bytes
SHA-256: b2563e85233037e3c2780690ed1455257f868516b5a962e54e6ffe29314c9cb1