Malicious PDF — malware analysis report

Static analysis result for SHA-256 7477dc64b99a1947…

MALICIOUS

PDF

41.9 KB Created: 2020-08-19 18:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5842fcdcdabb3fb3ae6dfe896764cdae SHA-1: 247c05d1d6e870891d4c8afd225978466f0945ca SHA-256: 7477dc64b99a1947b3445f437b85b44ebd39c19fb7ac8952da2dff6f95415e8e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'ttraff.cc' redirector. This technique is often used in phishing campaigns to obscure the final malicious destination. The ML classifier strongly supports the malicious nature of this PDF.

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=asean+national+costumes+pdf In PDF document text
    • http://files.ambassadormoris.com/uploads/1/3/2/6/132682882/6a5aa7c954c.pdfIn PDF document text
    • http://difakuvi.chartierney.com/uploads/1/3/2/6/132696147/329800.pdfIn PDF document text
    • http://files.stephanvandertoom.nl/uploads/1/3/1/4/131454190/1404726.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/66059847004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2500/4706/files/avg_internet_security_2016_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/civic_education_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/ar_accelerated_reader_school_cheat_answers_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9284/4448/files/zubolowinijunaxijene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2814/3510/files/rutuxivavaxixegaxunopepez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/rojokozazibuxojiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/precalculus_with_limits_larson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/kabbalah_italiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8875/6384/files/wovewozegejupodupon.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0D 5076 bytes
SHA-256: 4b81ffe823c3ac965e7dceeacdb35cd0af89d59730e5c24511944063e462175b
font_01_sfnt_off00006c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3B 9580 bytes
SHA-256: 22b25ab4decd562325361b88f0fadb0b9623c2a1081e8c5be8f7599c61d5b43c
font_02_sfnt_off00008d04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D04 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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