Malicious PDF — malware analysis report

Static analysis result for SHA-256 4627e5382a932b34…

MALICIOUS

PDF

45.0 KB Created: 2020-08-28 13:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23fe442fe1bffdb6e35d14ae63ad65c0 SHA-1: ffb8fafa554e6867e823f923dccd5eb39decbf3a SHA-256: 4627e5382a932b34bd3af7eb6a56a9306338d709e6389fbe645f6aa9480b08a4
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting PDF files, and one critical link to a known malicious redirector. This indicates a link farm or redirection attack designed to lead users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=kaplan+anatomy+coloring+book In PDF document text
    • http://files.sepiburgiani.com/uploads/1/3/1/1/131163635/2096288.pdfIn PDF document text
    • http://tubape.lcmbands.com/uploads/1/3/2/6/132696030/nawar_tanor_xumugowuxuvijaj.pdfIn PDF document text
    • http://files.kymgeorgeartdolls.com/uploads/1/3/0/8/130874246/569004cd.pdfIn PDF document text
    • http://files.jmshairdesign.com/uploads/1/3/1/0/131070918/kadepepud.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/1/0448/2056/2077/files/fairy_tales_for_preschoolers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/5670/2107/files/cake_mania_1_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6223/0181/files/wipetufobijajujasopen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9079/5934/files/header_files_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dofupuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6437/files/zawefipufawakuvaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2546/3456/files/how_to_block_bot_in_general_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6613/8522/files/5th_grade_go_math_chapter_1_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4920/5405/files/template_digital_business_model_canvas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/daxetapam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/ozbargain_hungry_jacks.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_off00007122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7122 5352 bytes
SHA-256: 077ff8d88cb1f9b81cafd7577d7e1cb8bc5c486fbcf539c7b722052dbb0c0009
font_01_sfnt_off00008348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8348 10708 bytes
SHA-256: 9f30e09be9b694a212dd3be164b997e0dbe5ab7fd6e35bbec7e6d90646d35ed8

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