Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccdc83ede4ea67c…

MALICIOUS

PDF

40.7 KB Created: 2020-08-23 21:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78b04c8745b5eac053f2771ddbc0efdc SHA-1: d3c1d2eebc7abd22c97155aae68143e74d9db966 SHA-256: 6ccdc83ede4ea67c50ee5f389d99bba1cf5c416509d9f3c987989eaf5f791bc6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a critical finding of a link to known malicious redirector infrastructure. The document body, though partially obfuscated, contains the primary redirector URL and several Shopify URLs, suggesting a phishing or scam lure. The ML classifier strongly supports the malicious verdict.

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=fieldcrest+sheets+supima+classic+hemstitch In PDF document text
    • http://moleraka.matsusokankarate.org/uploads/1/3/1/3/131398348/bebowewop.pdfIn PDF document text
    • http://files.artbrouse.com/uploads/1/3/1/4/131437242/3318521.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/1/0463/0672/1957/files/kufipejataxalelutakobut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/ielts_essay_samples_band_9_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/42315695612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7491/8302/files/69850317200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6194/4228/files/9970114731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1356/9687/files/gixolox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6358/0574/files/calendario_laboral_2020_madrid_oficial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3445/1874/files/buxugeloputejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/78130457219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/kanijifaxujotax.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 1

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_off00005fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC8 5268 bytes
SHA-256: 7d044af0d78a6f5760872694d0d7ab8e2834a562ae59e0ab7c66e866a00f4eac
font_01_sfnt_off0000717e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x717E 10724 bytes
SHA-256: 594192c59fa74c09246859b6c9fb51830903ac123a5edaa55519bf5172728be7

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