Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef65d87cf929b61…

MALICIOUS

PDF

50.2 KB Created: 2020-08-12 07:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2caa9924c0280fbf4437cb977820a03c SHA-1: 700305ef2c74ae948da2542f37f16e0030875ca9 SHA-256: 6ef65d87cf929b61342cd22c531a7d60adf8fa7a4fd3b6a22e0c124db6713b27
194 Risk Score

Malware Insights

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

This PDF file contains embedded links that redirect to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The primary lure appears to be a 'risk game map pdf', which is likely a social engineering tactic to entice users to click the malicious link. The ML classifier also strongly flagged this PDF as malicious.

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.cc/wb?keyword=risk%20game%20map%20pdf In PDF document text
    • http://files.unicuswatersolutions.com/uploads/1/3/0/8/130813055/4520a22d24d.pdfIn PDF document text
    • http://files.suisekiphilippines.com/uploads/1/3/1/0/131070424/4484afd.pdfIn PDF document text
    • http://tisaxuwid.iowablitz.org/uploads/1/3/1/4/131438667/8cb6f1b.pdfIn PDF document text
    • http://files.hourkidsmn.com/uploads/1/3/0/8/130874627/b6284bf70b.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/1/0434/6898/0377/files/30976715096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0401/8336/files/48039569573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7214/4038/files/29994593561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/20263517039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3297/3205/files/paradise_lost_book_1_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/95217913817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9251/2678/files/wigasenedemaxolowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6695/7722/files/pepafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4379/files/active_and_passive_voice_practice_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/rca_voyager_pro.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_off000087ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87CE 5304 bytes
SHA-256: dc8c69044f7d3468c57dd60686cccf588560006b335fe0176ab868520e32e91d
font_01_sfnt_off000099d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99D7 10120 bytes
SHA-256: 1dca9637c3b9d9907bccae0f4e94af66a0e9c6abde315e495c32fd2b26875780

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