Malicious PDF — malware analysis report

Static analysis result for SHA-256 578d619c43ea752e…

MALICIOUS

PDF

39.1 KB Created: 2020-08-04 15:34:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b3ff344e844555280ad91421a5af92a SHA-1: 70b29f5241a812782217cb18ec1e378b3a994e4d SHA-256: 578d619c43ea752e948d40cf9f62c35fb092ab996827d861b1582639a020483c
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to domains associated with SEO link farms. One critical heuristic identified a link to a known malicious redirector infrastructure at https://ttraff.ru/pify. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to external malicious content. No scripts were extracted from this sample.

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.ru/pify?keyword=rubrik+penilaian+writing+descriptive+text+pdf In PDF document text
    • http://nanijibax.gfwctennessee.com/uploads/1/3/2/6/132696414/d1d1259a4dd.pdfIn PDF document text
    • http://files.colquittcountysaddleclub.org/uploads/1/3/0/8/130814043/jubunoditezif.pdfIn PDF document text
    • http://files.wellnessthroughadventure.com/uploads/1/3/2/8/132814306/sogexewetevek.pdfIn PDF document text
    • http://files.wordslikestars.com/uploads/1/3/0/8/130813841/nuputomoj.pdfIn PDF document text
    • http://files.literacygatewayinstitute.com/uploads/1/3/1/4/131409200/36ccce.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/1/0428/9937/4233/files/fugupupipunarog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6807/0815/files/false_ceiling_designs_for_hall_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/nesek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2897/0647/files/understanding_and_using_english_grammar_5th_edition_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/changing_firefox_font_size.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3614/5814/files/55700968619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/84419118522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/28664527993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3748/1365/files/bipikenagulapatisafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/nojovef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2057/3082/files/sakarenemipurelinig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/bogufegigug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/14098432296.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_off0000591f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x591F 5756 bytes
SHA-256: dfac97d09ea382587f2d0677823c72ce5c1aee7c69f31513bff8c8bf87788e95
font_01_sfnt_off00006ce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE8 10104 bytes
SHA-256: 8067bb811174ebd4f98ec14bc2a2a9b15623cd2b02f89e548f65e26293cc5bad

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