Malicious PDF — malware analysis report

Static analysis result for SHA-256 54cb66739a4b91c5…

MALICIOUS

PDF

41.1 KB Created: 2020-08-09 18:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38a4c794c24daa4b2ff3f539424379c9 SHA-1: e5f8e59513e26b77e19d47ebe30256c3f076e98b SHA-256: 54cb66739a4b91c5adf5ea39d394e68d778e4b5f8443d55c56e8b311457e86ab
194 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, many pointing to Shopify domains, but one critical URL redirects to a known malicious infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates this redirector is used for malicious purposes. The document body, though heavily obfuscated, contains the primary malicious URL, suggesting the intent is to redirect users to potentially harmful content, likely for phishing or malware delivery.

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.ru/pify?keyword=amando+a+pablo+odiando+a+escobar+pdf+gratis In PDF document text
    • http://files.nysacanecorso.com/uploads/1/3/1/4/131406717/8347771.pdfIn PDF document text
    • http://fetumina.sodageorgia.com/uploads/1/3/2/6/132681352/6b31f40f2a.pdfIn PDF document text
    • http://files.victorseventroom.com/uploads/1/3/1/6/131637240/nejelamosobu.pdfIn PDF document text
    • http://wefek.morgannelycedavis.com/uploads/1/3/0/8/130874050/7361829.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/1/0434/1576/5153/files/newton_ks_police_daily_bulletin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8414/3010/files/edred_thorsson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2935/4906/files/formal_languages_and_automata_theory_jntu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/fiwupikame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4248/7972/files/72615382373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/ruxafobomep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6482/6783/files/softball_score_sheet_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9227/0494/files/98622091132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1697/3476/files/business_intelligence_tools_for_excel_analysts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/nesosaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9372/8158/files/pixadagesariba.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_off0000635c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635C 5604 bytes
SHA-256: 9c3e368d4ad7c7fc8e00685fb0473d2535edf1727e5208b3c747adf66fca2eb6
font_01_sfnt_off0000764d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764D 9704 bytes
SHA-256: 19e06fd463e1158ecdccf419e0bdeff654c623fbb4e012efae5c84810c3dc4f2

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