Malicious PDF — malware analysis report

Static analysis result for SHA-256 28eb2cefb7226afe…

MALICIOUS

PDF

34.1 KB Created: 2020-08-15 18:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b26d89fcb58ed3bd7a7d4ecd8e199197 SHA-1: 3cac112fbb8a8a11bffca8d6d40ed0455a87e726 SHA-256: 28eb2cefb7226afe912e19f6a8e1d28d3515ca3e70fdf6140cc83bfe4212224c
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, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.cc/wb?keyword=morgenstimmung%20noten%20klavier%20pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to malicious content. The presence of numerous other links, many hosted on Shopify, further supports the 'link farm' heuristic.

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/wb?keyword=morgenstimmung%20noten%20klavier%20pdf In PDF document text
    • http://files.jazzlegaspi.com/uploads/1/3/1/4/131406086/tisinetafolulaxas.pdfIn PDF document text
    • http://files.cardillelab.com/uploads/1/3/0/7/130776526/tosotek_norezanoxef_ziraramaxefe_silag.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/1/0434/7818/8198/files/15867423659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5316/2394/files/sapupaxowegotegemijudobod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5654/4409/files/gta_4_car_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/kexibobogovozupolisin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/foxinuxagox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/53918708598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2935/6959/files/wuwotedaropalibenik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/aws_certification_solution_architect.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/70403902128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/90987909936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/sumexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6483/3686/files/69657497430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8955/8680/files/razulatakelisisororapilox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6811/9453/files/xuxibokawedanufifitenelu.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_off00004556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4556 5488 bytes
SHA-256: 34c017ea080ec797ecd4cb87d584d44762dd60a50cfd6dd3f164e1020afc0a31
font_01_sfnt_off00005801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5801 9956 bytes
SHA-256: e7bab47f699984f7edbf648c3ac7c9fde051da3c2652a1f1678bc07e73191fdc

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