Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dbb47e6af3c8dc1…

MALICIOUS

PDF

35.5 KB Created: 2020-08-14 18:39:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9004accdcef9ee05275893674e7bc965 SHA-1: 261972bee5e42c04526aaf75b06b43781a502a3f SHA-256: 5dbb47e6af3c8dc1be9b510b2d6261137dc1ff31dda5bc7d3c6048090ad00a13
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to SEO-optimized content farms, designed to trick users into downloading further malicious PDFs or visiting redirector URLs. The primary redirector URL, 'https://ttraff.com/wb?keyword=circumference%20of%20a%20circle%20worksheet%20with%20answers', is flagged as malicious. This suggests a phishing or scam campaign using a lure of educational material to drive traffic to malicious infrastructure.

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/wb?keyword=circumference%20of%20a%20circle%20worksheet%20with%20answers In PDF document text
    • http://kaxor.prepvisionconsulting.com/uploads/1/3/0/7/130738638/tovazixinopupe.pdfIn PDF document text
    • http://zufatedaj.nurturenourishflourish.net/uploads/1/3/1/3/131383839/4394295.pdfIn PDF document text
    • http://wevev.natureswondercamps.com/uploads/1/3/1/4/131452883/pubasawut.pdfIn PDF document text
    • http://files.williammonaguenativeart.com/uploads/1/3/0/7/130739747/vunidegote.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/1/0430/7822/1973/files/posegitelabirunifag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/81442188694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/zupupop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/baruch_spinoza_livros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/88885427950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/university_of_bath_campus_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofusibosaduxigagixuvoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3778/4224/files/how_to_convert_to_word_document_free_download_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/72954173859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/9510034137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/jodani.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_off00004d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D82 5180 bytes
SHA-256: edceba7784fdaec6135637d0b8db7319f82123b9f2a207dd093972d75ace98ab
font_01_sfnt_off00005eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFF 9896 bytes
SHA-256: f95f293f12fc75414deb84b1d5718b2272452d30ca8679ec0fa17c9b5bc8db74

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