Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ebf63cc38d7e49c…

MALICIOUS

PDF

47.9 KB Created: 2020-08-05 00:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 827aa9af44661268dcfc9a42ae34ccc9 SHA-1: 1551a44bb9f078d965e3886c1818684316ccc2ad SHA-256: 5ebf63cc38d7e49c89a94bda7a7b2457c3864d215c09c9c83dbad43258ebcd57
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a deliberate attempt to lead users to malicious sites under the guise of providing a document. 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.cc/pify?keyword=carlos+marighella+minimanual+of+the+urban+guerrilla+pdf In PDF document text
    • http://fewolozog.rgvoorhees.com/uploads/1/3/0/7/130776262/tizuno.pdfIn PDF document text
    • http://files.spectaclesdirectedinburgh.co.uk/uploads/1/3/1/3/131383377/9427869.pdfIn PDF document text
    • http://lekizolif.grayinghockey.com/uploads/1/3/1/4/131437984/kebuve.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/1/0436/8157/9161/files/triple_scalar_product.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0381/0716/files/circulatory_system_mcq.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/15980557404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3467/6133/files/cetoconazol_cp_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/sigex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1853/4557/files/11183643803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/84356925648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/tozarufijono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/77821422100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/jupizoduwefex.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 2

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_off000074d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D1 5500 bytes
SHA-256: d99936e8fd2f0748795f448532b69eb2fd714b47d5c258c7f55cbb6dfe3c92c0
font_01_sfnt_off0000874f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x874F 13480 bytes
SHA-256: 5f7639dc60f9ae35655e0b63bd721c5f9c687ad4d144f06c5ad35417d7a3d194

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