Malicious PDF — malware analysis report

Static analysis result for SHA-256 19131aebdf36941f…

MALICIOUS

PDF

75.1 KB Created: 2020-11-09 20:56:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 34afe6339d335248ae122fe15d3841fc SHA-1: 016d0e6531c4dc6fa2f3936d032e1dfbe8b3c709 SHA-256: 19131aebdf36941fcf9fc34ca89b5a81be59833b015bd2847713d86221879d3c
254 Risk Score

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://traffking.ru/123?keyword=dayton+basketball+recruits+2020 In PDF document text
    • https://kepelawurolunuz.weebly.com/uploads/1/3/4/0/134017158/jusaniridapaze_wavor_linuperupon_nawoxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383915/normal_5f9776ae9ad61.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6535ee19-2bbe-4a79-8bdd-fd6c3be5e9dd/45873554083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b83e50eb-fb24-4dbf-a620-7d5b0637960a/parokokoworulavinalasorig.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/34073762499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53950069-b4fc-407c-838e-346e4ae9b922/46505351607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/967c9f45-c4ba-4158-96a4-970461f7a0dd/53527080065.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/lexijovunowatoma.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/21224145534.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/winchester_ballistic_silvertip_270_wsm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a927f578-1e26-4c63-b970-cc19342c87b4/btv_apk_baixar.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_off0000e8c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C4 5372 bytes
SHA-256: c34b1287c49bea84ba59c2b28d51cc69a1607751400972e0eca2f7dda021625a
font_01_sfnt_off0000fb28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB28 10888 bytes
SHA-256: f2362f18dda527b964c8adada7c4c3a6d96b85bb297d009bf18c6cba7d8f0ddf