Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f58b2a309ebbcad…

MALICIOUS

PDF

53.8 KB Created: 2020-07-29 23:04:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62b6d7b6347f7e0796f0d6eefd6858f1 SHA-1: 8f6870fd6c5fd172a0cbf1d687f33f33cec260e4 SHA-256: 5f58b2a309ebbcaddb4b9c5fb159153e64d8005842d2910583d876ef2dd657b5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains numerous embedded links, many of which point to a redirector URL associated with malicious activity. The primary redirector URL is 'https://ttraff.ru/pify?keyword=aprendizaje+basado+en+problemas+definicion+pdf', which is designed to lure users into downloading further malicious content. The file's structure and link farm nature suggest it is part of a phishing campaign aiming to distribute malware or lead users to fraudulent sites.

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=aprendizaje+basado+en+problemas+definicion+pdf In PDF document text
    • http://files.nussme.org/uploads/1/3/2/6/132696335/javamidetebagik_nufedajevowewo.pdfIn PDF document text
    • http://files.njokphotos.com/uploads/1/3/2/6/132695428/3288194.pdfIn PDF document text
    • http://files.smallbatchq.com/uploads/1/3/2/6/132683267/38bb7f1578740.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/1/0428/2266/4348/files/kadulinenaneragitexapas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/xagububijapalijegapim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7072/3998/files/ladoruvarikepejul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7951/4777/files/xakokexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/mamufugadesikivuxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7656/4630/files/dixofajegani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7763/9075/files/verub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9928/3861/files/puzoxejenanapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6142/7876/files/ligurutesumuzila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3947/2288/files/55749304990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/gifulolonoramibasenixuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/vaxitaboro.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 5

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_off0000912a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912A 5264 bytes
SHA-256: 72380135347b5718a420881e1ac56582a685e482696a5850260d4444e86a8c86
font_01_sfnt_off0000a2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E7 11388 bytes
SHA-256: ad7c388ab28d35cb4b2ba8ae02fd6dfd8cf764bbd9e88cc298b18f9cbc367502

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