Malicious PDF — malware analysis report

Static analysis result for SHA-256 8787554e1957c469…

MALICIOUS

PDF

41.6 KB Created: 2020-08-14 08:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e11c485e83cd99dd4f057d1485f9c52 SHA-1: 436a971e7308697babacc27fdafa7ffe86a65c3b SHA-256: 8787554e1957c46936bb86eefbb82a4620b796881a500f4e8060d9723d4e171a
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains URLs that are part of a link farm designed to deceive users into downloading further malicious content. The primary malicious URL identified is ttraff.com, which is used as a redirector.

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/wb?keyword=pulse%20modulation%20system%20pdf In PDF document text
    • http://fekow.ctabrelief.org/uploads/1/3/0/9/130969060/viwawuzazinaj.pdfIn PDF document text
    • http://files.stjamesevangelicalchurch.com/uploads/1/3/0/8/130814172/fomabawutexujuminu.pdfIn PDF document text
    • http://files.restaurantlegacysolutions.com/uploads/1/3/0/8/130873872/dirigatorodifafod.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/1/0428/9835/8432/files/dovaxetudomorunuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/natesikedawutoxud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/61685289788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4597/6221/files/barreras_actitudinales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/xudamivudivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/34102927639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5809/2439/files/mugakijefubopanilabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/lijogeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/derupoderumujokakarijuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0826/2297/files/63458401028.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_off000064c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C0 5196 bytes
SHA-256: 24d6a4bb50770c0f14832b7d7453f6acced58c11018268e8ec8809c75afc66ec
font_01_sfnt_off00007669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7669 10372 bytes
SHA-256: 6008dd167b58f9a9fb1f44128078755900b8e55b27ae0fab588d8e754e52566c

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