Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef441989d4c7484…

MALICIOUS

PDF

61.0 KB Created: 2020-08-09 03:40:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d1022261bc79472adb8e3ee919257bc SHA-1: e7800fa004d83327bf187ac378d46610f8a50c6b SHA-256: eef441989d4c7484780b6d107fb60d43042534c9c724380a47c48b8f93668730
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.ru/pify?keyword=ccdc+14+pdf', is flagged as a known malicious redirector. This suggests the document's purpose is to lure users to malicious sites, likely for SEO poisoning or phishing campaigns.

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=ccdc+14+pdf In PDF document text
    • http://tozer.enlightenedastrologycourse.com/uploads/1/3/1/4/131408899/5de9db9d0f.pdfIn PDF document text
    • http://goluso.conference2classroom.ca/uploads/1/3/0/7/130775735/mugef_latodiz_gatudawowaku.pdfIn PDF document text
    • http://files.classicallivinghistoryforkids.com/uploads/1/3/0/9/130969148/10f603916.pdfIn PDF document text
    • http://files.aigrettesilkens.com/uploads/1/3/0/9/130969080/tugibex.pdfIn PDF document text
    • http://dopow.mosiacpreschool.com/uploads/1/3/1/4/131483281/larewewuzoz.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/1/0435/8956/6627/files/rezalakofomidifazire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96258555683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/wejubiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2063/8632/files/knight_physics_workbook_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9624/3364/files/hoover_power_scrub_deluxe_carpet_washer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/sowagarupufopene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9468/6376/files/babalevegolotedopepazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/57393872030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7624/7971/files/wagos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/66592589578.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_off0000b482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB482 4676 bytes
SHA-256: d7b52bfda8a29f9e6bc4d724ab7317eacfefda7151d5ab7be5e1a1db01934982
font_01_sfnt_off0000c48b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC48B 10228 bytes
SHA-256: a300a86d1bd9059cb85a2739f62ec61d9d0e84d6cda1d19a724c380084efe0e2

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