Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc16c8c7232239b…

MALICIOUS

PDF

45.5 KB Created: 2020-08-05 09:29:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d900c6771d88b32c2f98c713bf0e1a6 SHA-1: 4c17c597dd0e0764a9ec7edcc7f05d451b779ca7 SHA-256: 6dc16c8c7232239ba5955aaf80fa12565a8f04ad7daa3f7a8010a5fccca30154
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same URL, suggesting a phishing or scam attempt. The presence of numerous external links, many pointing to benign Shopify URLs, indicates a link farm designed to obscure the malicious redirector.

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=macbeth+act+2+study+guide+answers+pdf In PDF document text
    • http://files.coatsmuseum.com/uploads/1/3/1/4/131453249/c377b2b.pdfIn PDF document text
    • http://files.owlsmaryleonardchapter.org/uploads/1/3/1/3/131398235/2fbefc70ce34.pdfIn PDF document text
    • http://files.marilyndavidsonflatware.com/uploads/1/3/0/9/130969545/8571160.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/1/0432/1535/6067/files/what_is_love._mp3_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9543/2099/files/vyond_free_trial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/sewuvenonekekoxemawidumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/bitud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/55101878495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4691/9579/files/rokexokaroto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/gufamepuzulidigugoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0300/files/41629040701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/87405141325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3544/3871/files/datipepomomom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3876/0342/files/xupezukade.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_off00007301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7301 5856 bytes
SHA-256: 7548e603fbb350f0484471f4fca7a760d4cab0631e36e61395d97f81b28c5b8b
font_01_sfnt_off0000870b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x870B 9976 bytes
SHA-256: 35ead027031d6819526f428e9eabc8dc8aff976ac9f6b7b71106fe12dee8918a

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