Malicious PDF — malware analysis report

Static analysis result for SHA-256 88eb6d95ba2e5c02…

MALICIOUS

PDF

38.3 KB Created: 2020-08-15 23:36:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc2ce17f8f43c111233cbd90c837a6e3 SHA-1: cffe00eb20928bebea73ed053aee0a71f0d5f58e SHA-256: 88eb6d95ba2e5c02f3b3dbe1cb7909b0d605ebc15e602f4cd25a3874a9d8eb69
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body and heuristics indicate a lure for free downloads, likely leading to phishing or malware. The ML classifier strongly supports the malicious nature of this PDF.

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=reorder%20level%20formula%20pdf In PDF document text
    • http://files.rammothdm.org/uploads/1/3/1/4/131438583/vupuxitebewij.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/1/0432/0424/7715/files/33905404867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/posonuxefiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/sabosifunumibawawar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/87287958585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7451/8180/files/duvaratulimajolobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2037/8524/files/internet_cafe_business_plan_template_doc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/64439401193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7790/1214/files/76142887381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7998/2492/files/46088811485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2222/0439/files/venkatrama_telugu_calendar_2015.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 2

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_off000058e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E3 5076 bytes
SHA-256: dbf2d1f03cf038652a0a8a4b9600cc9f3d8811b2635836eb163404990b7a2f36
font_01_sfnt_off00006a1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1D 10108 bytes
SHA-256: d77664956d80f76791ce811c315cf1db65549663c319fb8d28b236a6f8667d2e

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