Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c5b823f4d3d8ed8…

MALICIOUS

PDF

43.7 KB Created: 2020-08-09 12:12:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f29d3389b8bdbcbc0a0add4cc22b920 SHA-1: e92d365be0dc3846114cba1748284988bf7bbea1 SHA-256: 0c5b823f4d3d8ed8f8d9a7db5ee75e74d84e28347c5f5077df94d9354f7c5a03
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to an SEO redirector infrastructure designed to host malicious content or phishing pages. The document body and heuristics indicate a lure related to 'Certificado de origen eur 1 pdf', suggesting a phishing attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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=certificado+de+origen+eur+1+pdf In PDF document text
    • http://files.heavenyes.net/uploads/1/3/2/7/132740462/d2c66.pdfIn PDF document text
    • http://files.dare2dreambigger.com/uploads/1/3/2/6/132681560/4055200.pdfIn PDF document text
    • http://files.regenerationpositive.co.uk/uploads/1/3/1/0/131070859/tojizadomiludojegik.pdfIn PDF document text
    • http://pilaj.mrfitzbiology.com/uploads/1/3/1/3/131378950/6519025.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/1/0429/0406/0071/files/how_to_make_snake_in_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3311/6317/files/biochemistry_and_physiology_of_nutrition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3749/7243/files/vinelafobozijajugeruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudogezemolajefenupil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7160/1817/files/69759313806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/coordinate_geometry_basic_formulas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7599/2728/files/35007798019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/35949389465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5501/4298/files/mifisunileriv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8518/5702/files/63718815867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/50877824179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4337/2703/files/animal_farm_characters_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80835258875.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 5

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_off000069cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69CF 5068 bytes
SHA-256: bcb5ef11e535c2a3d9c779cdc79b616c217c4c4e05517f098a5dfd26e469f3ca
font_01_sfnt_off00007b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B26 11332 bytes
SHA-256: 88ba4ef63576884019674d27315fac78dfc925b125b7672a75d84fb7ed06e831

Open this report in the interactive analyzer, or submit your own file for analysis.