Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0ffa65c61ac1efb…

MALICIOUS

PDF

115.9 KB Created: 2020-08-10 07:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f1fa47e53c1ef7aa9992fe48a06a380 SHA-1: cb53f21f4ccd6bdecbfc908f5df4e707d3fbfb00 SHA-256: f0ffa65c61ac1efb7c79e36ab178b98d0b26ae67e1cb6d98591dace6dffb0b1b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=cloud+nine+caryl+churchill+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic was triggered, suggesting the document is part of a larger SEO poisoning effort to distribute malicious PDFs. The document body is heavily obfuscated but contains the same redirector URL.

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=cloud+nine+caryl+churchill+pdf In PDF document text
    • http://files.masonkirkpatrick.com/uploads/1/3/2/6/132696030/kotezawinip.pdfIn PDF document text
    • http://files.ashwoodcarpentryjoinery.co.uk/uploads/1/3/1/6/131637255/kozagudopuxulepe.pdfIn PDF document text
    • http://tojonen.aierossmann.com/uploads/1/3/1/0/131070476/1885330.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/1/0437/5661/7877/files/49534794022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6962/7799/files/all_chemistry_formulas_for_neet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0963/8553/files/56344535990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9665/7320/files/34462056087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2131/0875/files/mosigifip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/josuvakixibasigagisovusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/95971446075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6935/7728/files/pitiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5804/files/14273491816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/sepisubogaviva.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17FF5 4992 bytes
SHA-256: 2f00fa163c5d8edb11e54ee2527e1815b33b4ed19e3efc5ed52bd2898af33dc9
font_01_sfnt_off000190e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x190E6 10240 bytes
SHA-256: 7fe21442f707159e41e56e0bdfd990cbbb01b77df08d99dee17a5e1486e5bb31
font_02_sfnt_off0001b3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B3F9 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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