Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9f8c4e84c8ea5a3…

MALICIOUS

PDF

39.6 KB Created: 2020-08-06 04:50:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b408c66d0ec7fd47fc7634e8c2b9af6 SHA-1: 7ef1b7be4118950652be5c22816f2c35e11c06a9 SHA-256: d9f8c4e84c8ea5a3633376b3e0c0568e2bf95cb1969d0ccd409ed3e508bed95c
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at https://ttraff.com/pify?keyword=non+life+insurance+definition+pdf. This suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=non+life+insurance+definition+pdf In PDF document text
    • http://files.samanthajade.co.uk/uploads/1/3/0/8/130814225/ae5cd72219.pdfIn PDF document text
    • http://files.tsangsuiyiu.com/uploads/1/3/0/7/130776632/fivijabeboxite.pdfIn PDF document text
    • http://files.clairdelunerockymount.com/uploads/1/3/2/7/132712096/5761165.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/1/0439/4500/1115/files/timex_wr30m_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/4237150392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/xifusozenaruxedurepig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7390/4545/files/nutobopikepoluzefakozekes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/71099404437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/rabitomubipetasubodojedav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/king_kutter_bush_hog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0506/6913/files/93884861817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5226/9717/files/28594012169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4479/7607/files/agsa_bursary_application_form_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3909/6986/files/2191520833.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 3

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_off00005e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E61 5120 bytes
SHA-256: 98d4e5d60a7f8d35b15b8aa02521a83f074f89d424877d311fa3c758f6a6d049
font_01_sfnt_off00006fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE1 9956 bytes
SHA-256: 03551125c213db421b91befb4b82b5f7673bf7bd59dec350e802c0419179917b

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