Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3b40a925550af3d…

MALICIOUS

PDF

43.4 KB Created: 2020-07-27 23:04:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bdeec045cab28806083993761891a077 SHA-1: 8e5f1a79c61233f5fbf58ca0cf7af3899766d623 SHA-256: d3b40a925550af3de841f90718cd9908b56ad6ad7b6b2552b305a34438d3d33b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, identified as a 'PDF_SEO_LINK_FARM'. One of these links, 'https://ttraff.cc/pify?keyword=best+android+samsung+tv+remote', is flagged as a malicious redirector. The presence of these links suggests an attempt to direct users to potentially harmful content or phishing sites. The ML classifier also strongly indicated maliciousness.

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=best+android+samsung+tv+remote In PDF document text
    • http://files.moonlightairfoundation.org/uploads/1/3/1/3/131379567/c7506e54324e.pdfIn PDF document text
    • http://files.invention-info.com/uploads/1/3/2/3/132302995/54a17bd.pdfIn PDF document text
    • http://files.gersongirls.com/uploads/1/3/0/8/130874085/8898792.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/1/0435/1682/1672/files/xorilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1713/files/defaxisumivot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6819160869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/47701113658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/rovox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0513/1421/files/71485284504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/pokobipelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/27203458212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78683638278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/14022994598.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 4

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_off00006c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4B 5104 bytes
SHA-256: 06f05c578333b568b7d986a98ecf5529debff831d0a53664964e8793d039eb17
font_01_sfnt_off00007d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D91 10192 bytes
SHA-256: 75e03b64de39f95195b4ad052dffb7fd07a9dce41f5eea787ec01762abe129bb

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