Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf46c1bdb13533a…

MALICIOUS

PDF

41.2 KB Created: 2020-08-29 15:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf6d5b9428d5eddf80fbc5b2dd792fd7 SHA-1: 624f0b911a4406320a3ae2f9a4f4422dfe76bc89 SHA-256: abf46c1bdb13533a7da93f73794a45dd916ffe57ce5da0b7f7aff8ece438cfb5
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, identified as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of numerous external PDF links further suggests a link farm designed to attract users searching for specific documents, such as manuals.

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/wix?keyword=tempstar+smart+comfort+2000+manual In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_69cf917caf734bc190fba76d69154479.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_81a30c15573c4d93b5b754f527edbcfe.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_e022dddd4185465698943bf8c13a8487.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a292157288c34cb6a8fde7ba316f5abb.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_301c36b947394c2687d7119b95287eb0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_29f53c28561d4bb1a99562316b0557f2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d9d831bda95e4f87ae51f78058eb8043.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d875d13cd1e6451d9ac5728e0dbfcc71.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1945/files/sapupoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6336/9125/files/administracion_de_la_calidad_total_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7440/3996/files/wugoxixinirodedututifagaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/5432/6937/files/kindergarten_worksheets_rhyming_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0156/0478/files/mazda_axela_english_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

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_off00004b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B9E 5384 bytes
SHA-256: 2154acb5e390f5405ee6d608ebc133cd11f3c1ddc4cb058ff54e226c9099ea9a
font_01_sfnt_off00005dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCE 10412 bytes
SHA-256: c026978d05da8bf4a030b490a4c0c65e869d57d9d76972a6fbd96844eb6bede7
font_02_sfnt_off000081a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A7 16064 bytes
SHA-256: 026a586128736d29da6542416095f0b483470add235992e736c82304e06d1e5b

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