Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbee7a623dc22725…

MALICIOUS

PDF

48.2 KB Created: 2020-08-26 15:19:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 959d40cc176351c907cc82479e4e1bc8 SHA-1: 110bdd6b2ba250e7e43dc1671a91ae2a5f0af2f3 SHA-256: dbee7a623dc22725103f41fd8581fceeeb3817e795b7d5276a4ba0182f48656e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of a link farm heuristic indicates the PDF is designed to distribute multiple external links, likely for SEO poisoning or to spread malicious URLs.

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/pify?keyword=juegos+modificados+de+voleibol In PDF document text
    • http://files.italianstringsacademy.com/uploads/1/3/0/8/130874358/fekemazo.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/1/0436/1066/9213/files/english_film_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/6474024953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/carbono_anomerico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6411/2805/files/estimated_cost_sheet_problems_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/sotexurate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/sigebis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2312/2077/files/38646532223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6248/4383/files/58088216838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/52141127474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4627/9080/files/73429383113.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 1

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_off00007cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF4 5436 bytes
SHA-256: 23177fecb12483aaf958e5234be1e087f7cd68ad03c6b92d942e9911cdf35f14
font_01_sfnt_off00008f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F67 10656 bytes
SHA-256: cae65b7be5c3bb66eb3f9ba0aca966998f108b3a551cce84f4882ed9b039e0c6

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