Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bb98c8ebb99bbeb…

MALICIOUS

PDF

48.2 KB Created: 2020-08-07 09:40:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e1996838a2c53ae09f438dd65d932dc SHA-1: fdafca0611a5c5f79d2f3552459a0cabf72e7562 SHA-256: 6bb98c8ebb99bbeb6b81ca617a6d52cf26b8a8524231b81c9a3477d7058f038b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating it is a malicious redirector and part of an SEO link farm, designed to drive traffic to potentially harmful sites. The embedded URL 'https://ttraff.ru/pify?keyword=pdf+editor+free+online+tool' is explicitly flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure.

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.ru/pify?keyword=pdf+editor+free+online+tool In PDF document text
    • http://tekoluven.appliedbiochemists.com/uploads/1/3/0/8/130874330/139912.pdfIn PDF document text
    • http://files.thefitnessmasters.com/uploads/1/3/1/3/131398292/vugutozos.pdfIn PDF document text
    • http://files.keysboatdocks.com/uploads/1/3/2/7/132712015/8512c1.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/1/0428/1548/8163/files/definition_of_chronic_liver_disease.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/kagelaxiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/71549522119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9300/7272/files/modubojexowegufojufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/97572134453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2865/8848/files/pasifusofagetoriwalujazis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/sisumofiwesiwuvak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/76157602396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9394/0629/files/46893828176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3247/6838/files/bicsi_tdmm_13th_edition.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_off00008111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8111 4516 bytes
SHA-256: 75244022980e42c4e9b48806b59591b62010b02f8dda1bc33f643af8665e5269
font_01_sfnt_off00009079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9079 10388 bytes
SHA-256: 1bcb66640fb79d1f55881a1fa8d9581dcb26aed96b29df9e0bd484b2658a87ef

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