Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1c2bbabb2b75295…

MALICIOUS

PDF

38.9 KB Created: 2020-08-23 14:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5da50b774413d090bfb078059f7e3859 SHA-1: 8e191f18ee6a691e7a7db72f11fb74ecbea1ba9e SHA-256: a1c2bbabb2b75295ffdc9e6c0b3c9d71b69cc6f05011693c4c58232d893d25ea
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure, specifically a URL related to 'edgehill college bideford uniform'. This suggests a phishing or scam attempt to lure users to a malicious site. The file also contains a large number of external PDF links, many hosted on Shopify, which is characteristic of SEO link farm abuse to obscure malicious activity. No scripts were extracted, but the primary malicious indicator is the redirector link.

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=edgehill+college+bideford+uniform In PDF document text
    • http://nozosesej.mindwest.net/uploads/1/3/2/6/132695351/bamuweji.pdfIn PDF document text
    • http://files.hedongreenprint.co.uk/uploads/1/3/1/3/131380767/c5cab39d57ceb2.pdfIn PDF document text
    • http://jasonogut.mandarin4u-sd.com/uploads/1/3/1/4/131407558/befukegobafox_dunixidufo.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/1/0434/0429/6348/files/barrett_s_esophagus_diet_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9881/6160/files/libro_de_auditoria_contable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/wanutil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2473/6678/files/ncdpi_licensure_renewal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/antique_jewellery_designs_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7487/9642/files/annadurai_movie_songs_kuttyweb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4570/7162/files/65526565474.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_off00005ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA0 5144 bytes
SHA-256: ce809c9e2a9e5e0cc2ae73184890ad8ff23444a1fcfb6d48982834d7c47b13da
font_01_sfnt_off00006cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF0 10020 bytes
SHA-256: e4b1cfbbe8d81f15bc97e2d44d829ea1e5529abd4f3b3aab4610087deefb448e

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