Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cef64ed0aac58cd…

MALICIOUS

PDF

133.4 KB Created: 2020-07-22 15:25:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ad962629bf86948731a88592f7c8ff4 SHA-1: 1f7dd04b746dfd06b5f3517cf5e01bb8d97bdf1c SHA-256: 4cef64ed0aac58cdc012e58d5606d36f2b3e375ac4817d3551352f8a970c99d4
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'Bailey and love surgery 26th pdf', potentially a pretext for a scam. The presence of a 'PDF_SEO_LINK_FARM' heuristic indicates a large number of outbound links, many hosted on Shopify, likely for SEO manipulation or to obscure the malicious redirector. The 'SE_CALLBACK_LURE' heuristic further suggests a phishing or tech-support scam context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=bailey+and+love+surgery+26th+pdf In PDF document text
    • http://files.wigginsroom.com/uploads/1/3/2/3/132303001/6273326.pdfIn PDF document text
    • http://files.christopherenston.org/uploads/1/3/1/3/131379219/xoxewijexidukasa.pdfIn PDF document text
    • http://files.holtzeducationalcenter.org/uploads/1/3/1/3/131382673/likax.pdfIn PDF document text
    • http://files.labordebeefalofarms.com/uploads/1/3/2/6/132695511/xominam-vupofivasa.pdfIn PDF document text
    • http://files.groundwaterarts.com/uploads/1/3/0/7/130738548/4638478.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/1/0430/7891/0106/files/serosawobupodowojirutek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1014/6983/files/ranavukakiniwigevamame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/6453437688.pdfIn PDF document text
    • https://rijebuposel.files.wordpress.com/2020/07/bijazidupepiwuj.pdfIn PDF document text
    • https://voluniw.files.wordpress.com/2020/07/90301973834.pdfIn PDF document text
    • https://kosajujezer.files.wordpress.com/2020/07/luvuwijotagodokurugew.pdfIn PDF document text
    • https://musuloses.files.wordpress.com/2020/07/gufatuxof.pdfIn PDF document text
    • https://julames.files.wordpress.com/2020/06/75155227365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4433/9861/files/favarizobekezeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7379/8306/files/gexedekivakako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/jamubagiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/navititizurepemel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/40169356985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/83244536061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1475/8293/files/taviluxapepuvixinosufapo.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 8

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_off0001b353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B353 5684 bytes
SHA-256: fea24e3cdee94b58b4050a1b9ae724fd2db4e6f03f61e8ea04da45a4f63808fa
font_01_sfnt_off0001c6ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C6AB 13364 bytes
SHA-256: 27027899008588e088a925ac70f05177308f6260fb2bfa8b104e22b98ed25f89
font_02_sfnt_off0001f225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F225 16072 bytes
SHA-256: caea212bfaaf2897f4851770f673d25c90b0e412378cb4b0d6f36fafa9739068

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