Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb0899832081358…

MALICIOUS

PDF

44.2 KB Created: 2020-08-10 14:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fbd7bb686e236c75401479387624bf87 SHA-1: 6e2ae029f0c873e96cbb2b1c3cd2e6f7f2c2398b SHA-256: 6eb08998320813585888f3525792d52312aedfdc51917a1c830f7ac5ea8f0b10
194 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous external PDFs, with a primary redirector to a malicious URL. The document body, though partially corrupted, contains the same title as the malicious redirector URL, indicating a lure to download or view content that ultimately leads to malicious infrastructure. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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=r%25C3%25A9unir+plusieurs+fichiers+pdf+en+un+seul In PDF document text
    • http://rupamej.newsongwellness.com/uploads/1/3/1/3/131380005/newudinefesareliv.pdfIn PDF document text
    • http://files.stfranciscatholic.org/uploads/1/3/1/4/131438869/8043425.pdfIn PDF document text
    • http://files.jasehlee.com/uploads/1/3/1/4/131437376/kelamuj_vurikaxejo_mamewin.pdfIn PDF document text
    • http://files.zaritglassworks.com/uploads/1/3/0/9/130969340/abc28bfbd987391.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/50751207741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8992/7067/files/engineering_vibration_4th_edition_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/dictionary_of_synonyms_and_antonyms_alan_spooner_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8972/9438/files/28077103442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7279/8373/files/16865108072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6975/1967/files/java_string_programs_examples_with_output.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6304/1430/files/89392668997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19227598733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2553/0005/files/69096841333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/24967960576.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 5

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_off00006a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A21 5180 bytes
SHA-256: 65f85bbd4602e340bde6c1415f290a6510020cdb4c560f5fd1da97303d7a8141
font_01_sfnt_off00007b6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6F 12152 bytes
SHA-256: f4934e1123998ab08f41fbabb050d9cdcdef4fb12e179ce75eea0588c1c546e4

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