Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c4de40183132ec7…

MALICIOUS

PDF

35.3 KB Created: 2020-08-15 03:56:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80ee993b58ea47ec96409f5ae6cbae1a SHA-1: 9864e67f1ff94ed4eab8fe5aed103ad78b1d92ef SHA-256: 6c4de40183132ec79ea652ab68eb41bd529fbe201398d469b9c3195b4c05672b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically a link farm designed for SEO poisoning. The primary redirector URL is https://ttraff.cc/wb?keyword=consentimiento%20informado%20oms%20pdf, which is flagged as malicious. This suggests the document is part of a phishing campaign aiming to trick users into downloading further malicious content or visiting compromised sites.

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/wb?keyword=consentimiento%20informado%20oms%20pdf In PDF document text
    • http://files.jambandpurist.com/uploads/1/3/1/8/131856365/76af5249.pdfIn PDF document text
    • http://files.leeclarkemusic.com/uploads/1/3/2/7/132740958/rejopumatewil_kubiwu.pdfIn PDF document text
    • http://files.lisawbwalker.com/uploads/1/3/1/4/131438055/zananivubizu-bekufekinu-jixuruk-zomokikesikoba.pdfIn PDF document text
    • http://files.amomentfrozen.co.uk/uploads/1/3/1/3/131378779/meruk.pdfIn PDF document text
    • http://kejotiw.gillisplayandlearn.com/uploads/1/3/2/6/132682871/pusafawuxera_davav.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/1/0433/1061/2635/files/78183251032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7251/0362/files/43619339988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9813/9813/files/zen_alarm_clock_sound.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74523611049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3698/0886/files/soprano_saxophone_scales_and_arpeggios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/kewadukexokuvobexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7631/3503/files/24063110793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3449/9479/files/wheel_horse_tractor_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/rewisivigivugusif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/3600/2715/files/44468402081.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_off00004c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C7D 5060 bytes
SHA-256: f77fd6a7eebd47dc0f3b8bcababbc9ec8e97aec19e54adbd09b3607cd1bf770d
font_01_sfnt_off00005d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D93 10100 bytes
SHA-256: 1c47e87ca7b3ae8b2f5c323b34f234fbe4815b72e0b5f3cc1cc5e606f0bbcd93

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