Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebd5a5139acc6f76…

MALICIOUS

PDF

35.4 KB Created: 2020-08-04 17:48:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa79c2a945cd99f7c09f833778a935f7 SHA-1: 3da7b773f961061815b239d5e0b1d0a6b414805b SHA-256: ebd5a5139acc6f76777f3048ffb5654cc9acd62522c4fbddfe8b78423f3697c2
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to 'career paths medical book pdf' and includes the malicious URL. The PDF_SEO_LINK_FARM heuristic further suggests a large number of outbound links, many of which point to potentially malicious or suspicious domains. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this PDF.

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=career+paths+medical+book+pdf In PDF document text
    • http://vimixuzuw.bonniemeguid.com/uploads/1/3/1/6/131636664/nepiwufa.pdfIn PDF document text
    • http://files.thebatesoutfit.com/uploads/1/3/1/6/131606186/rifet.pdfIn PDF document text
    • http://files.bysamanthajo.net/uploads/1/3/0/7/130740212/xujijaxox.pdfIn PDF document text
    • http://files.ultrafitpersonaltrainingstudio.com/uploads/1/3/0/7/130738919/3852185.pdfIn PDF document text
    • http://bharatkemitra.com/uploads/1/2/9/6/129626313/129626313.html?whatIn 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/1/0437/6372/8545/files/71860724869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71895705060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/85225190353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8295/7478/files/xapito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7309/2246/files/20393176911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7683/7785/files/fogujuxizaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1513/3605/files/sowakegovozosaduwuselexat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3981/7890/files/bugazeketoxomulafadunusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/59538643681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2629/2629/files/668385041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/10927255673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4146/3189/files/likivibidunijupoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3609/0273/files/venefixob.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 7

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_off00004a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A90 5504 bytes
SHA-256: 2dd2bbb2c21c1a6f0499a6357d04578301019349d9c5d7c9d188cd57da53d065
font_01_sfnt_off00005d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D18 10172 bytes
SHA-256: 74682dc41ebc4daba24fdf2ba28e90cf4ee5e1b2d9663515410ed9ad2a6b7751

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