Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8f44b125ce0d2b0…

MALICIOUS

PDF

52.9 KB Created: 2020-08-01 18:11:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23db3bf40cfea5d39590ba9e714042f9 SHA-1: fafc32653b639c13d0c21cbaf506cb1cff8d15a4 SHA-256: e8f44b125ce0d2b03f0e608cb8515be1e06d28c2654b4b351779d03cee33e02a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with the primary malicious link pointing to a redirector on 'ttraff.com'. This indicates a link farm strategy, likely intended to lure users to malicious sites. 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/pify?keyword=counter+strike+go+dedicated+servers In PDF document text
    • http://files.be-the-space.org/uploads/1/3/0/8/130814126/9603365.pdfIn PDF document text
    • http://files.eridecanada.ca/uploads/1/3/0/8/130813827/c7c8d6.pdfIn PDF document text
    • http://files.irieiwaforstudentsinc.org/uploads/1/3/0/7/130739383/4303262.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/1/0432/1381/5966/files/63842724293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/gary_auto_clicker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/52300554874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/ranurujevukipexazide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/27974866572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9966/1223/files/48357598993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/guwiwelefigasoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/kojasiwoxarulokerada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4189/7110/files/22120136232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7064/files/24143433230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/30545318817.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE3 5104 bytes
SHA-256: cdd274bb7cc9c205b1c96b9391d6c549abf1df598c0cef4010aa2e6e40a85e8a
font_01_sfnt_off00008c4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4D 4620 bytes
SHA-256: abf84685458ca141b97c8a113d01ccd797c73e043fc55adb628fbe9c973c3021
font_02_sfnt_off00009cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF3 12736 bytes
SHA-256: deef2445579690e499202212453e14736edb69ccd25f6cc838471aec975863db

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