Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c85d4794132ef49…

MALICIOUS

PDF

61.6 KB Created: 2020-07-31 16:40:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41d4c41ee477797d09dda209c935b946 SHA-1: 64d1801c2a5c59f42ccaf560b6b2d5a1ad741361 SHA-256: 4c85d4794132ef49f165b6999f35e393ffaacc5bb6b73e765de8ca50b4cd9d1d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, with the primary URL pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates that the document is part of a link farm, likely designed to manipulate search engine results or distribute malicious content. The presence of numerous links to PDFs hosted on cdn.shopify.com and other domains suggests a broad distribution or redirection strategy. No scripts were extracted, but the document's structure and embedded links strongly indicate a malicious intent to redirect users.

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.com/pify?keyword=%25D0%25B0%25D0%25BC%25D0%25B5%25D1%2580%25D0%25B8%25D0%25BA%25D0%25B0%25D0%25BD%25D1%2581%25D0%25BA%25D0%25B0%25D1%258F+%25D0%25B8%25D1%2581%25D1%2582%25D0%25BE%25D1%2580%25D0%25B8%25D1%258F+%25D1%2583%25D0%25B6%25D0%25B0%25D1%2581%25D0%25BE%25D0%25B2+7+%25D1%2581%25D0%25B5%25D0%25B7%25D0%25BE%25D0%25BD In PDF document text
    • http://files.dianegleimmft.com/uploads/1/3/0/7/130739012/3c11dccc49d.pdfIn PDF document text
    • http://files.melaniedevoid.com/uploads/1/3/1/8/131872055/gefuzoge.pdfIn PDF document text
    • http://files.kinrossmensshed.org/uploads/1/3/2/6/132695288/5da97b846.pdfIn PDF document text
    • https://ttraff.com/pify?keyword=%25D0%25B0%25D0%25BC%25D0%25B5%25D1%2580%25D0%25B8%25D0%25BA%25D0%25B0%25D0%25BD%25D1%2581%25D0%25BA%25D0%25B0%25D1%258F+%25D0%25B8%25D1%2581%25D1%2582%25D0%25BE%25D1%2580%25D0%25B8%25D1%258F+%25D1%2583%25D0%25B6%25D0%25B0%25D1%2581%25D0%25BE%25D0%25B2+7+%25D1%2581%25In 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/1/0435/8583/1070/files/wejebufivuzajexebizulume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4453/6473/files/63423060217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/73702217871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/wutizexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/37818915839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/13511533550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/xonefevaposapiwemewoxux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/duliwoledemovaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72890356131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/91705687278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/zigemopazodeluzobem.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 2

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_off00008617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8617 5916 bytes
SHA-256: 81ac050532d94e7185669a36f3ff091e3d30acde69c7c90874424a178e40c782
font_01_sfnt_off000099e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99E4 16656 bytes
SHA-256: 8c15434ce1ffc1d1d9843e4c43574577dd8cb9631db975f7a14bb548d7eef513
font_02_sfnt_off0000cd21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD21 17036 bytes
SHA-256: 60055b2700642a032282bb2f8f9efda9bdd23821c6913cad4fb1aa8c89acbceb

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