Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6db07dbfc97ea4d…

MALICIOUS

PDF

35.1 KB Created: 2020-08-05 08:30:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e64a6d5a5a63bf6019eefd9b0f79faa0 SHA-1: 246a5d5f2be2ecee77cc4de8192e5da1c3bea9cb SHA-256: e6db07dbfc97ea4db030705c9543d35b1b3375e7a7d440fc57e405222243aef5
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download for educational materials. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to known malicious infrastructure. The document body, though corrupted, contains the URL that likely serves as the lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, suggesting a broader campaign to distribute malicious content.

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/pify?keyword=oxford+bookworms+stage+6+pdf+download In PDF document text
    • http://files.blaine-bacchiocchi.com/uploads/1/3/2/6/132696263/3028133.pdfIn PDF document text
    • http://files.hireoptimize.com/uploads/1/3/1/4/131437333/132108279d.pdfIn PDF document text
    • http://files.miehayashimusic.com/uploads/1/3/1/3/131380728/mobivemogif.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/1/0428/2312/3100/files/damufezeloge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1129/2827/files/61715891763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4635/4594/files/puxumasurobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/present_tense_verbs_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/92106027151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0089/7440/files/34302189239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6371/3695/files/dipiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2100/1119/files/12234502021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5205/7244/files/vigaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0225/5770/files/troy_bilt_pressure_washer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5445/7254/files/rimidotiji.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_off000048d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D1 5908 bytes
SHA-256: 2f8e4b2b7f6dc52031b02211138447b4d40a795fb7bb56829427a2eda18d70b2
font_01_sfnt_off00005cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEC 10140 bytes
SHA-256: e29f83feb2f5f5f82132a006b4f838b1d1e393d7bde265c6d6245d578ab112e6

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