Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba960a0728f5573f…

MALICIOUS

PDF

47.8 KB Created: 2020-08-20 07:40:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c184a4deb18390a8368e658196f6ec1 SHA-1: 728a8bb3a5679ea4625fb5e35ff331d8a4ac9882 SHA-256: ba960a0728f5573f7d0af764e809b665379e7a15b18662de834622088b36d895
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=vmath+teacher+guide'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the redirector URL and a reference to 'vmath teacher guide', suggesting a lure to a malicious site.

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=vmath+teacher+guide In PDF document text
    • http://nekep.thehealthymusicianproject.com/uploads/1/3/2/7/132710621/5c36b45b08aa5d9.pdfIn PDF document text
    • http://files.stonerfitness.club/uploads/1/3/1/4/131438079/9429020.pdfIn PDF document text
    • http://wolomok.jwsavageinvestigations.com/uploads/1/3/1/3/131398472/buxisalas_fosimuwe_tivigam_dojadado.pdfIn PDF document text
    • http://files.drylanddevelop.org/uploads/1/3/1/4/131453623/1306c.pdfIn PDF document text
    • http://files.jslegalservices.com/uploads/1/3/0/7/130775286/5f8659d.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/1/0432/2328/5920/files/femekozojuxoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/31798086116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4715/7914/files/arkansaw_bear_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2610/1910/files/gimepupepipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/47802698691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/tasakegovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/10415372373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/84561256656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3314/0127/files/35621851892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3305/8710/files/axillary_dissection_technique.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_off00007b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B40 5108 bytes
SHA-256: 0ba3bd6c141268baf2d9b9faa50a5ae830d13c1eedd1dd2cebba0432d89acbaf
font_01_sfnt_off00008c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C71 11164 bytes
SHA-256: b53b899dc14c0a0f8edadb2718f8e1683452ce476b59e092563cdb83c7fb2429

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