Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2bc3c91c855c79…

MALICIOUS

PDF

44.1 KB Created: 2020-11-03 07:50:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 89b1c23c29cda6980930f1fda6997b34 SHA-1: 6cab94bdf988fa1e1bf308accf9436d60e18d22d SHA-256: af2bc3c91c855c79dfdd59fe98d630eee029e9f28adbeca732b78602203b20a8
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.club/123?keyword=red+ball+2+25+levels In PDF document text
    • https://raxabebawozovi.weebly.com/uploads/1/3/4/3/134311701/e6bcc2d.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/4064779974fde6.pdfIn PDF document text
    • https://masejufubalabej.weebly.com/uploads/1/3/4/3/134388341/1906a5884a.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/6173fbef-573c-4cee-aad6-c40bb817fce7/bidobim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cd35a16-914a-4ed2-9469-ec718a45b2a3/33724337839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34de99ab-f7cd-4fc8-a895-dca0c01d1b3d/33054367595.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b90de2c8-4e35-434e-9b58-4642f9bae0bd/didilamumitanidabenipezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4a1c5eb-7068-4eb7-a114-5fe52336d83b/21329061371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1037f87-cede-4595-a659-8e1265666c04/tadepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e97ae2f0-196b-4c50-9ad7-3b22034f9cc2/xisorezetuzawukimofolok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d92e0283-dc88-44aa-aa14-3db51a353ab5/valor_presente_ejercicios.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/61232245601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07f55630-68ab-44e8-aa5e-9d599c4ca9a2/72407126407.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/hernia_umbilikalis_anak.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_off00006d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1C 5188 bytes
SHA-256: 36bf8d2dbfcf24721bfd4572c92b350e562daf62c7905cd3671fd50b86b9c0b6
font_01_sfnt_off00007ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE1 10904 bytes
SHA-256: dc5ee3860773342902a3951762a86df15c542f419841a5c5d1a7a115a4d4d485

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