Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1fd199211743148…

MALICIOUS

PDF

49.4 KB Created: 2020-11-09 07:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 732df7e8f8552f4ebd9892a281a22565 SHA-1: 1767e412c1cc03ce1309d0b2bbcea1c389abfa0f SHA-256: b1fd199211743148c2a630eb1eb388dee637a90075abe250e1f9d4dca6f216d2
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious infrastructure. The document body contains a URL that points to a known malicious redirector, which is likely intended to phish users or lead them to further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious lure.

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://traffking.ru/123?keyword=yo+visite+ganimedes+pdf In PDF document text
    • https://s3.amazonaws.com/juzowilipi/zipapuxinitid.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/59631040954.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/wofukowobilanoxufeforaki.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/el_faro_jacksonville.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/fundamentals_of_economics_book.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/056daf45-fb37-40ae-87bd-48b52e322d3c/10067725721.pdfIn PDF document text
    • https://vawabuneje.files.wordpress.com/2020/11/butterfly_fly_away_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57a1f784-b36c-4b52-85bd-fe576e889094/paxejot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0f94da9-5dad-489b-8aef-3b0757e0f427/nunid.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B94 5256 bytes
SHA-256: 3c124167c55fade580bfcc884dd1a4f15ef43f46959f6bc02192c26d8991cbf3
font_01_sfnt_off00007d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D70 10656 bytes
SHA-256: adfe1904ddc688d8856da7b0cda7f411da10311da37c4448819be8b621c53695
font_02_sfnt_off0000a252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA252 16208 bytes
SHA-256: fe139538347d724e6b27dab22ead91fbb1eb3470a850438049392072e7f85921

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