Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d80e827ce22fcbe…

MALICIOUS

PDF

33.6 KB Created: 2020-08-09 04:39:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c0693ba28ead9318c63ce3d9c4f0caa SHA-1: 8deb30530c3485d183d29a3854e73ecdf2ae6926 SHA-256: 5d80e827ce22fcbe17255780bec4605220638f04c09e7832c023faad0a5c84cc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that appears to be part of an SEO link farm. This suggests a phishing or scam attempt, likely to trick users into downloading further malicious content or visiting malicious websites. The ML classifier strongly supports the malicious verdict.

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=gear+tooth+vernier+caliper+experiment+pdf In PDF document text
    • http://files.njjrthespians.org/uploads/1/3/0/7/130775384/76d76af78.pdfIn PDF document text
    • http://files.premierpoolsga.com/uploads/1/3/2/6/132681508/517054.pdfIn PDF document text
    • http://files.larryphillipsnyc.com/uploads/1/3/1/0/131070458/4698396.pdfIn PDF document text
    • http://files.gforceunlimited.com/uploads/1/3/1/6/131606056/9376217.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/1/0438/9961/7448/files/71932392968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6640/6550/files/vivogobinidunama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5282/6777/files/11072159649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5832/1818/files/linksys_wrt54g_setup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7250/files/xowaruto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/fefejurusol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/sogulaxifodiwagipebejowij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/86281559892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/gafubojasifoxedabizumiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8004/8023/files/21332344295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9122/1911/files/isometric_projection_vtu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/99018348961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/hollow_knight_simple_key_locations.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 3

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_off00004907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4907 5376 bytes
SHA-256: 4cc983fa1f2523db2fa5d1da29438943306ff43e0c1c943fade96acb154d2742
font_01_sfnt_off00005b38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B38 8788 bytes
SHA-256: ed6c3bfe2ac08d637564eb6f92fd0f34695bc01e79f656bdc9573b4a2bceb1d4

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