Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fdef2640d4fdcf3…

MALICIOUS

PDF

43.8 KB Created: 2020-08-01 11:13:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b3d532c046d4f67b152daf35e788863 SHA-1: 5e5e0f4b7d866d5d3bf0972aa6420ae70304ff86 SHA-256: 6fdef2640d4fdcf3cf7855f8bbc22e0c56d6f054e1016348fe67e18ccecb9d45
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as legitimate document downloads, but they redirect to malicious infrastructure. Specifically, the link 'https://ttraff.com/pify?keyword=mozart+clarinet+concerto+pdf' is identified as a malicious redirector. This suggests a phishing or scam attempt to lead 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.com/pify?keyword=mozart+clarinet+concerto+pdf In PDF document text
    • http://files.stonecutterswsq.com/uploads/1/3/1/4/131406222/377363.pdfIn PDF document text
    • http://files.bestconcordiapodcast.com/uploads/1/3/0/7/130776573/1152967.pdfIn PDF document text
    • http://files.kpscritters.com/uploads/1/3/1/3/131379039/6885408.pdfIn PDF document text
    • http://files.victoriavisions.com/uploads/1/3/0/9/130969918/1709199.pdfIn PDF document text
    • http://files.bottineaubaseball.com/uploads/1/3/1/4/131452938/ronelexobefule.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/1/0431/6397/5835/files/vobofizipimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/20281398859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dedijadexurusefux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1877/2903/files/navojawilozepakitoneta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/sufunowexuruvamobidugis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7036/5589/files/jiregegutanumiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/49348304440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0247/0306/files/16712128019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3983/3763/files/65678407524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8478/3509/files/pinolanuzemigik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3740/8936/files/tazasabumevukuzijinunabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6331/2533/files/mikazaguzenogazamitoj.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_off00006e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E67 5028 bytes
SHA-256: 534cc0532571e141a8eacf1e01dbb008b1004770a26a6bf7085e894ae9884df9
font_01_sfnt_off00007faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FAA 10188 bytes
SHA-256: 4288a8f18c2ad33f7878b52c4ec80beddf0accede57913bb95cc85c65242fb82

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