Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6ccff2cad07c097…

MALICIOUS

PDF

46.9 KB Created: 2020-09-01 17:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7d14820a598988be08a9ce0f2e6f624 SHA-1: dcc4f9de9cc760d04891d0cd373152fbc3b8af8d SHA-256: c6ccff2cad07c097513bb25384fe9a56c86d29b6432beae93540600ea51003a1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which is likely used to funnel traffic to further malicious content. While no scripts were extracted, the structure and heuristics point to a malicious PDF designed for traffic redirection or SEO abuse.

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/wix?keyword=squarespace+wiki+template In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/253000_0e776dd2e29642978370067b5b1302fe.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0c8cc8_c83f92870348497f908e352a083580af.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a64c8c_35108245eeb8446fb484933d8fd5de0e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/dc8a8e_c358945ac1444a2f9974ed8e374f3814.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_fa69dcda05904dac861d848e4ad6c543.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cc10e7_5d2ceeb92e014dee8d6684e35bbc5cae.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a6c34eea607d423bbeb400693806f6c4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_eed5214769894018ade179f2bcb6e221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6172/1765/files/hotspot_shield_premium_apk_6.9.7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5283/4717/files/35099132198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/fipofenavixaguli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/53426219489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/50200144051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0954/8188/files/28406263126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9857/9879/files/soxoxokifevibufag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8553/7175/files/bachelor_pad_plans.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_off00007973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7973 5464 bytes
SHA-256: 5e27cc7db9eb87182fb70a200379abedf82aef4f26cde7b11aa88bd305098077
font_01_sfnt_off00008c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C12 10080 bytes
SHA-256: d73849edae4c26f7bcd2383f3c04e651daad8964d9dec1c635290665ffb4523e

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