Malicious PDF — malware analysis report

Static analysis result for SHA-256 06db7819215ec571…

MALICIOUS

PDF

44.0 KB Created: 2020-08-21 20:08:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c6e66c28d3a0da611de195479e7ad0e SHA-1: a4d2a3124d52c19abf9f7a49d2a9c125d4032f0a SHA-256: 06db7819215ec5716853ebd20049b7ec18dc4510473f93cc4ecd91c7bad7e5ab
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirectors and potentially malicious domains, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though heavily obfuscated, contains a URL that mirrors the lure text, suggesting a phishing or content-luring attempt. The ML classifier also strongly flagged this PDF as malicious.

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=medical+certificate+format+for+maternity+leave+extension In PDF document text
    • http://liganudeb.placentaoc.com/uploads/1/3/1/3/131380213/kejivopusag-zonilugonobij.pdfIn PDF document text
    • http://vazelo.paramountbuilders.co.uk/uploads/1/3/1/3/131383483/desaxokotemo-balopojumi-pokipurarokaj.pdfIn PDF document text
    • http://files.phoschol.com/uploads/1/3/0/9/130969140/kuzesile.pdfIn PDF document text
    • http://files.ajukmapparel4.com/uploads/1/3/1/4/131482823/fe3fb682.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/1/0436/4579/6512/files/how_do_i_change_my_minecraft_launcher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/98599947943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3300/9047/files/gettysburg_address_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/core_java_black_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/37440674177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3317/3927/files/bhagavad_gita_chapter_1_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/american_english_file_4_second_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4594/4481/files/soxhlet_extraction_lab_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/what_is_a_discord_webhook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2981/5711/files/kokibolupakugata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/60738567899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1307/8168/files/24880601592.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_off00006e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4B 5400 bytes
SHA-256: 7c86d4872bd03634865dd6fb186fe64565fe8d050a5ec0055a5cef94b92bdeb9
font_01_sfnt_off000080a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A3 9988 bytes
SHA-256: 2bf30e81e1dae30d54bd693682a5ae963b85bad84a673b01844b9af8075786a9

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