Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4e143c7f7d5ce4…

MALICIOUS

PDF

47.8 KB Created: 2020-08-24 00:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd5e24391cbc728920daf473709c4f56 SHA-1: f5cdbd236fc18c1f6108917466bbbd9b70f088bd SHA-256: ed4e143c7f7d5ce48aa2bd3c1656ee617ff7699e5e5b561fb920306f19c3404a
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting. The presence of a 'download button' heuristic further supports a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=atheros+ar5bxb63+driver+xp In PDF document text
    • http://vujuvasop.hannahjudson.com/uploads/1/3/0/7/130739204/xipuz-begesikavojiz-bowuzivo-wofilut.pdfIn PDF document text
    • http://toxorut.drnajera.com/uploads/1/3/0/7/130738720/fupigilobigew-vekukokijuvu-gurigotofaxe-fewumowe.pdfIn PDF document text
    • http://files.flyingcoloursnursery.co.uk/uploads/1/3/2/7/132740836/f488c01.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/1/0433/7264/2454/files/catecismo_de_la_iglesia_catolica_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9296/7581/files/jofif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7107/7526/files/brandon_sanderson_starsight.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/lasuwipekizulezulipaziviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/82673940591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/15830609548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6044/5855/files/levenoxixuforojaxewujaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5379/1909/files/1782079638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/29198438342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1175/1579/files/97106082571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7118/3777/files/64903342268.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 2

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_off00007464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7464 5716 bytes
SHA-256: 833a84b7cb994b26823eee4489d891c6dfe7c194a56780a52dff701e09f001b2
font_01_sfnt_off000087d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D2 13416 bytes
SHA-256: 21f109066b2333e5ad3dacbec370105b2da28b9b2a70d9c36bce23bf9b20bd5b

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