Malicious PDF — malware analysis report

Static analysis result for SHA-256 cddfe93ec54c6b97…

MALICIOUS

PDF

39.1 KB Created: 2020-08-20 22:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf23f89dac51e6adb3c749aa5c2ddb02 SHA-1: 5e6da03ded518d06d2e31b585a687315d99f2cc7 SHA-256: cddfe93ec54c6b97bccc672440e8cc338846277d95c7c9de027682805bba8bc5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, including a primary redirector URL, designed to lure users to malicious infrastructure. The document body and embedded links suggest a phishing or scam attempt, likely related to the 'marriage anniversary songs telugu' keyword. The ML classifier strongly indicated maliciousness, and the presence of multiple SEO-optimized PDF links further supports a malicious intent to distribute malware or conduct phishing.

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=marriage+anniversary+songs+telugu In PDF document text
    • http://files.twistedsugar.shop/uploads/1/3/0/8/130874139/mumujomuwizej.pdfIn PDF document text
    • http://files.northcoastfoodtours.com/uploads/1/3/1/6/131606733/4953484.pdfIn PDF document text
    • http://files.emeraldcoastbilliards.com/uploads/1/3/0/8/130814605/mukedamedugasaloga.pdfIn PDF document text
    • http://files.grundmeyerleadersearch.com/uploads/1/3/1/6/131636990/sifixoj_jutixepipi_bevasagipaxuja_sivosukisozi.pdfIn PDF document text
    • http://files.carnarvonraceclub.com/uploads/1/3/2/6/132695730/7497085.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/1/0428/9835/8432/files/nubizasijimowedemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/29774507255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/comment_rediger_un_avant_propos_de_rapport_de_stage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5666/7541/files/30510174476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5116/2517/files/end_of_probation_period_letter_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6079/7333/files/bobcat_331_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7405/9424/files/bapamozowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/bijazidoturozipilige.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_off00005c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0C 5020 bytes
SHA-256: 48ea0b54e769cde086518a58be89960738a8e240a235ce65fd764c85c57f6c60
font_01_sfnt_off00006d40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D40 10192 bytes
SHA-256: dcdac544d4adc3028010eb971d5458fc6910e1ad81aa0e98caaa9f8a1e6e9113

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