Malicious PDF — malware analysis report

Static analysis result for SHA-256 687a8bd91e546abe…

MALICIOUS

PDF

45.2 KB Created: 2020-08-25 14:04:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d2f9dc24bfb6e80bd88d87a4d5d0d76 SHA-1: b958d0da2da7fc33befbbf2bd8b1c9b6f59f2bdf SHA-256: 687a8bd91e546abe7ff9950f677860ba3c06b1e5acf54e6b31719256bb99ad62
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and redirects users to a malicious URL, likely for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of numerous links to external PDFs suggests an attempt to manipulate search engine results or distribute malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=website+builder+for+mac+free.

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=website+builder+for+mac+free In PDF document text
    • http://files.rhosarts.com/uploads/1/3/1/4/131409017/ef5db335c9fb1.pdfIn PDF document text
    • http://files.jeanfrankstark.com/uploads/1/3/1/3/131379049/5449d14a8263.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/1/0435/3910/3912/files/fizonefawagazewivuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/security_guard_services_company_profile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7622/2118/files/35163698970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0570/5374/files/7285554484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1241/5907/files/77580666616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/doxomibapavep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1119/3501/files/xabazunuvejototub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2590/8383/files/31338585139.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_off000074d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D6 5320 bytes
SHA-256: 71a0f0b69110e1030845b397c063feec7444220bb1ef5738e074cd1904763eed
font_01_sfnt_off000086d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D1 9940 bytes
SHA-256: a895dcbe3e68ebab5cd10d195e967b4ffbd72f0c9f20be37fe2d673daf48b50e

Open this report in the interactive analyzer, or submit your own file for analysis.