Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ad48796c1764f00…

MALICIOUS

PDF

35.3 KB Created: 2020-08-06 08:21:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93f211621054dc32d790d2589c8fb19e SHA-1: faae6a0399c30117a7c973221a578d179b06a325 SHA-256: 8ad48796c1764f000e3fd0cdade00bc0d9e909183ea8531ba9ecb66505719f9f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that leads to a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites.

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.cc/pify?keyword=basic+english+grammar+betty+schrampfer+azar+pdf In PDF document text
    • http://files.cariebertseminars.com/uploads/1/3/0/7/130776208/jogomewo.pdfIn PDF document text
    • http://files.durhamregionroofing.com/uploads/1/3/1/3/131397955/5fa4eff.pdfIn PDF document text
    • http://files.vision-destinations.com/uploads/1/3/1/8/131856491/fejode.pdfIn PDF document text
    • http://files.towncreekvision.com/uploads/1/3/0/7/130775357/feduku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3106/7813/files/futamaduzovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/tunenagususegezedame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5050/8181/files/bezafibrato_efectos_secundarios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5361/2182/files/talosuvejidigulalowepixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2781/4805/files/raspberry_pi_media_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6319/7347/files/14184804497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8125/3535/files/jotulufuwovisafajinefebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/pro_tools_9_downloads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/biographies_for_3rd_graders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/jixedigozunudetuwugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/xebizumonejowilukos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7388/7649/files/2006_chevy_impala_repair_manual.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE7 5912 bytes
SHA-256: f6bf99c810170baa3e2fb8e7211de9dbf4a045213178e3571c9f1663bbe7f42a
font_01_sfnt_off00005ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE3 9704 bytes
SHA-256: 665b3d02727c8e8d2fa8e0b9d4e5a3a19424c38aa644a7685a6f6c1d2f052835

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