Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe98a91f2d95eae…

MALICIOUS

PDF

46.4 KB Created: 2020-08-15 00:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6737309787d1aaf9081cc4f260c32405 SHA-1: fea6cbfb98698df5051d302a34510f0b0f14d0c7 SHA-256: ffe98a91f2d95eaeb34db9476d4dad3ffc77a1f37d799b2173f2cfca2027c865
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Cervical spondylosis physical therapy pdf' and a URL that aligns with the malicious redirector heuristic. This suggests a phishing or scam attempt to redirect users to a harmful site.

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/wb?keyword=cervical%20spondylosis%20physical%20therapy%20pdf In PDF document text
    • http://files.cockburnarchitecture.co.uk/uploads/1/3/1/0/131070581/6307191.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/samogikaniludewevawosun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9857/8848/files/33407778537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0486/files/35287309819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/gonejewukexidibozota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/8468277861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/38133875706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8687/9651/files/20601567883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/the_twelve_kingdoms_anime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/69519539636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6239/4021/files/49145473123.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD0 5216 bytes
SHA-256: 6e78fff36581b95664aa88128d6681a1ef59616c1f5fbfb352e8c2f7f6c9144a
font_01_sfnt_off00007c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C85 9956 bytes
SHA-256: 1b07bcd1bdbec4c6d1c378b205d87d03b1a2425bf9bb01f618bcc2c62415f1f8
font_02_sfnt_off00009e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E5A 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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