Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1223e06d89fdab2…

MALICIOUS

PDF

46.5 KB Created: 2020-08-12 01:17:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67001011cceb327bf252f5a065d08a68 SHA-1: 6ab4923d9630bd21ca008d9f98c570a9d7962282 SHA-256: b1223e06d89fdab238296bc00adaefdfde05ee6c437a89522f72e9f96fb5ba2f
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=agudas+palabras+pdf', is flagged as a malicious redirector. The document body contains garbled text and the tool information 'wkhtmltopdf 0.12.5', suggesting it was programmatically generated to host these links. The primary attack pattern involves directing users to potentially harmful external sites through this link farm.

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.cc/pify?keyword=agudas+palabras+pdf In PDF document text
    • http://xumize.tworiverscampgroundandstorage.com/uploads/1/3/1/0/131070476/8991165b2b8.pdfIn PDF document text
    • http://files.thriftbox.org/uploads/1/3/2/7/132740337/wobejipedesifod.pdfIn PDF document text
    • http://files.bauerinks.ca/uploads/1/3/2/6/132681836/cf6d02338c4eb1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7264/2454/files/nutricion_enteral_y_parenteral_enfermeria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/senabopupabavugaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0553/3598/files/57642725317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/javapolibetabaxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/pemerejitazawevezikuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6926/7354/files/tufexiwekexutab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/17381683050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/96028465530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7833/7187/files/61322601236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/iwaszkiewicz_brzezina_chomikuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4367/6582/files/kawavim.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C7 4756 bytes
SHA-256: d9f85d00914436589fb5c280d5f5bf9df4670f75ae7fb6c99326fc1d0bd0e044
font_01_sfnt_off000079f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F1 11096 bytes
SHA-256: d2c382e9038c465e19aff8a94c4a817a2bf3782ca9ae7664d3b1e0064af7a0d5
font_02_sfnt_off00009dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DFA 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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