Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9dbb1f38d4a4457…

MALICIOUS

PDF

116.2 KB Created: 2020-08-10 17:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8fdb7a7eec0e26b65b9a25d65f097b1 SHA-1: 5e25ee97243142d5046d1b62f2915214e3769c05 SHA-256: d9dbb1f38d4a44577da1dc3d58e34d97e27ba524e102ca647cf515cc63117945
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to legal documents and the malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and lure victims. The ML classifier also strongly indicated maliciousness.

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=acta+constitutiva+de+una+sociedad+anonima+en+mexico+pdf In PDF document text
    • http://files.legacysportsphx.com/uploads/1/3/1/8/131856121/4569051.pdfIn PDF document text
    • http://files.shakespeareonclark.com/uploads/1/3/1/3/131379650/tonetagididizi.pdfIn PDF document text
    • http://files.dlfinancial.org/uploads/1/3/1/3/131379749/tobij.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/1/0433/0212/5733/files/kuweluzazalasoxevas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/velomotikotizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekugoxozeritazol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2484/8795/files/pdf_accessibility_checker_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6756/8291/files/dessert_darwin_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6271/2728/files/surah_yasin_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6194/4228/files/mopimomilewawafudima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/kaxulal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/30749212856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0618/8955/files/sapifoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/kowugekexoguk.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 8

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_off00018898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18898 5288 bytes
SHA-256: 0467935543f5c36a48063b0bb6b9ba7883307a7408a538f607bab61ef7dbf9bc
font_01_sfnt_off00019a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19A8B 12204 bytes
SHA-256: 9cc87723ede6b5cbc09915633eabd448e5e621148fcdc404be2e90d9f3f3c6c7

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