Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fcf304049178f85…

MALICIOUS

PDF

59.3 KB Created: 2020-08-08 22:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 172fabddbe7f0928c89f2154a06b13c7 SHA-1: fcb9d77e5067bd77d648d1bfb75ca342b4e3be4f SHA-256: 5fcf304049178f854de931ff1fb47691935f46e13d9643c7ba5b617aec851e47
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector infrastructure associated with malicious activity. The document body, though heavily obfuscated, contains a URL that matches the redirector, suggesting a lure to download further content or engage in phishing. 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=bucknell+campus+map+pdf In PDF document text
    • http://files.ljsaudioequipment.com/uploads/1/3/1/6/131637014/5122479.pdfIn PDF document text
    • http://files.gabriela.is/uploads/1/3/2/6/132681698/fuwexubekoli.pdfIn PDF document text
    • http://files.grassingtondevonshireinstitute.org/uploads/1/3/1/4/131437161/b310fedc22d9ef0.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/1/0437/7808/0925/files/nezofirewoxovufigez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2071/4137/files/85_chevy_c10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5052/3031/files/mawiminujudujixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/divuxatafize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3390/9665/files/wijukagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5970/8058/files/padidevisube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3220/4696/files/daberomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/54592767930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/pinirizupora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8998/4674/files/vaduwunozotigegulazete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/30496578071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2436/7266/files/minunedegexanodezoxaruva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/tafsir_quran_afaan_oromoo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3006/8898/files/siserujer.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 8

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_off0000a55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA55D 5316 bytes
SHA-256: 6d9a29cc75ec9f714c2f2b8daaea12cc3fb09c97152b0e6e2d898bea73bb937c
font_01_sfnt_off0000b76c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB76C 12628 bytes
SHA-256: 14ad62ccf3aa8d743de5c6133a4e61387177b9b4ecefccd086e845826bbbff44

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