Malicious PDF — malware analysis report

Static analysis result for SHA-256 4284345c1b45aca2…

MALICIOUS

PDF

50.7 KB Created: 2020-08-09 06:07:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 627a96d9e61c48b8e597aa578cfad106 SHA-1: 1dd61063e74a181d704df20dbccc39c12d36841e SHA-256: 4284345c1b45aca2785a399b0713fc949b16894f9321de3e1c0aafcd442dc3ee
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body is heavily obfuscated, but the presence of the malicious redirector link and the sheer volume of outbound links suggest a link farm or phishing attempt designed to lead users to harmful content. No scripts were extracted, and the document body itself does not contain actionable text, making the link analysis the primary indicator of malicious intent.

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/pify?keyword=firewall+architecture+pdf In PDF document text
    • http://files.alissabethphoto.com/uploads/1/3/1/6/131606454/koxeja.pdfIn PDF document text
    • http://files.annagalatirealtor.com/uploads/1/3/0/7/130776718/979473.pdfIn PDF document text
    • http://files.packandpostalcenter.com/uploads/1/3/0/9/130968972/felikoniwipowosi.pdfIn PDF document text
    • http://files.nhsvolleyball.com/uploads/1/3/1/1/131163559/234907.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/1/0433/9623/5415/files/command_block_enchanting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/95149989325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/11237238590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0783/5293/files/world_famous_buildings_and_their_architects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/ruviraxopux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/journal_of_social_issues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4430/5046/files/26071848240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8555/4073/files/50555609037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5578/2819/files/zelefewesizizofezitoduki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59854739703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/23644618712.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_off00008adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADC 5112 bytes
SHA-256: 2f5fc812a425226b7b0e98def72187fe90bac26141168ed618418cec21907c20
font_01_sfnt_off00009c4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C4C 9888 bytes
SHA-256: 40454580cc652d023456d510a84b2ebce6d920f4576723f67f87ef1624ada402

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