Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b3d0eb034f6c5d7…

MALICIOUS

PDF

69.5 KB Created: 2020-08-14 20:41:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca0f57e86e429a67ba806be9db8263d1 SHA-1: a6c6b547e76872a80c04591eab413fca643e72ad SHA-256: 7b3d0eb034f6c5d7ae2dd9d7459f68e7ce1ea2c5651032c6a186cbd6674034af
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as legitimate downloads, but they lead to a malicious redirector at ttraff.com. This SEO link farm technique is commonly used to obscure the final malicious destination. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector confirms the intent to lead users to harmful content.

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=shovel%20knight%20manual%20pdf In PDF document text
    • http://files.buildingbrilliantmindsonline.com/uploads/1/3/1/1/131163738/movodanuduvarevef.pdfIn PDF document text
    • http://files.trinitywellnesskc.com/uploads/1/3/1/4/131454345/6062453.pdfIn PDF document text
    • http://files.morethansoulfood.net/uploads/1/3/2/3/132302973/timuf.pdfIn PDF document text
    • http://files.peppertreepark.org/uploads/1/3/2/8/132814674/6919a1a7.pdfIn PDF document text
    • http://files.jamesjordanfoundation.com/uploads/1/3/0/9/130969334/4ea4b9c0.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/1/0454/2604/9182/files/hydrocarbons_alkanes_alkenes_and_alkynes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5331/7272/files/curriculum_development_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8020/3944/files/9644571168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/ruravor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5335/0053/files/nojurojapugapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0908/0477/files/21808497148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5095/7991/files/28335355132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/florida_highway_patrol_accident_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/54489159709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1460/files/3569193650.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_off0000d0e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E8 5408 bytes
SHA-256: 6bfb993f2d08832af89784cb0c050ce7a40b9a5f9a77b9a81520781919173ff6
font_01_sfnt_off0000e32f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32F 11184 bytes
SHA-256: 9eca256b0f867ed44e42e382372ccd2fdcb78f241ebc77db99606c3a748c4489

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