Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cc657517443d32b…

MALICIOUS

PDF

39.9 KB Created: 2020-08-01 00:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23495a0eff5a13a7a8986bbffd4fc2b8 SHA-1: a2c9babb81b2a4eaa233f25e83c1582579344b1f SHA-256: 2cc657517443d32b5f9c2e44727cd3586a90a9377f45fa2a83d13e9395910019
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated but contains the primary malicious URL. The primary attack pattern appears to be a link farm designed to redirect users to potentially harmful content.

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=graphic+world+inc In PDF document text
    • http://files.louiserosejohnson.com/uploads/1/3/0/7/130739450/37c16d70272.pdfIn PDF document text
    • http://files.arturofuentes.com/uploads/1/3/1/0/131069869/8037538.pdfIn PDF document text
    • http://files.charlestonmanufacturingcenter.com/uploads/1/3/0/8/130874338/gubut-bipafujapifati.pdfIn PDF document text
    • http://files.mycbdbody.com/uploads/1/3/1/1/131164009/1940347.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/1/0435/5152/2977/files/nugufote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3080/5653/files/5516408615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5542/3398/files/agents_of_mayhem_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2847/2220/files/1913219451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/41320136438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/vuvanexaxaxelodezoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/61796865943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7663/0181/files/24568173822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1001/3853/files/nugukukogovawoxuzik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2896/3747/files/42330602171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/64248013659.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 5

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_off00005354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5354 5108 bytes
SHA-256: ba8a4f3cab665319dc62e8b7d483c2292bf40421de73ca94ed66ba44755bf075
font_01_sfnt_off000064c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C1 14644 bytes
SHA-256: 07176e9a6d24e92cff8597333b3d7329a2d111d091418af19f5e3d5447757e89

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