Malicious PDF — malware analysis report

Static analysis result for SHA-256 741b3ec615e768c9…

MALICIOUS

PDF

44.8 KB Created: 2020-08-21 13:20:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af16c2e375e4187863c75bec38ef5526 SHA-1: a999c8239825c6f6860abb7bd484a25c4e0ff136 SHA-256: 741b3ec615e768c93764a1dc4a9024434301c69825cfe5468303cde13446a996
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified as a redirector for SEO phishing. The document body, though heavily obfuscated, contains text related to 'Egyptian cotton sheet set review' and the malicious URL, suggesting a lure to a scam or phishing site. The ML classifier also strongly indicated maliciousness.

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=egyptian+cotton+sheet+set+review In PDF document text
    • http://files.wycombeparanormal.com/uploads/1/3/0/8/130814106/janujog-gajijarexo.pdfIn PDF document text
    • http://vadiro.heartlandpools.com/uploads/1/3/1/1/131164250/damilun-xifopifozojibaj-digewuponikono-wagok.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/1/0435/8737/1171/files/9637260930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0806/4677/files/2064725130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3075/2930/files/chrome_setup_for_pc_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0817/8850/files/tegiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2476/0488/files/17234881530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0508/3811/files/kaplan_series_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8436/3416/files/minecraft_forge_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/adsorption_chromatography_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8380/9443/files/dnd_5e_help_action.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/19002739667.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 4

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_off00006f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F89 5376 bytes
SHA-256: 7fc3d06f3b06f8fe2e62cda7b0f770cc06c05b738b518da40a5afb7379553308
font_01_sfnt_off000081eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81EB 10660 bytes
SHA-256: 00e9a9ce7398228908de5c3e3807116c06c68bb4dd697352401d588898deb288

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