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)
MD5: 1f29d3389b8bdbcbc0a0add4cc22b920 SHA-1: e92d365be0dc3846114cba1748284988bf7bbea1 SHA-256: 0c5b823f4d3d8ed8f8d9a7db5ee75e74d84e28347c5f5077df94d9354f7c5a03
154 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Certificado de origen eur 1 pdf' and includes the malicious URL, suggesting a phishing or redirection attempt. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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
    • http://files.heavenyes.net/uploads/1/3/2/7/132740462/d2c66.pdf
    • http://files.dare2dreambigger.com/uploads/1/3/2/6/132681560/4055200.pdf
    • http://files.regenerationpositive.co.uk/uploads/1/3/1/0/131070859/tojizadomiludojegik.pdf
    • http://pilaj.mrfitzbiology.com/uploads/1/3/1/3/131378950/6519025.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/how_to_make_snake_in_python.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6317/files/biochemistry_and_physiology_of_nutrition.pdf
    • https://cdn.shopify.com/s/files/1/0439/3749/7243/files/vinelafobozijajugeruj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudogezemolajefenupil.pdf
    • https://cdn.shopify.com/s/files/1/0434/7160/1817/files/69759313806.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/coordinate_geometry_basic_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0434/7599/2728/files/35007798019.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/35949389465.pdf
    • https://cdn.shopify.com/s/files/1/0429/5501/4298/files/mifisunileriv.pdf
    • https://cdn.shopify.com/s/files/1/0428/8518/5702/files/63718815867.pdf
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/50877824179.pdf
    • https://cdn.shopify.com/s/files/1/0432/4337/2703/files/animal_farm_characters_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80835258875.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069cf.bin
bcb5ef11e535c2a3d9c779cdc79b616c217c4c4e05517f098a5dfd26e469f3ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69CF 5068 bytes
font_01_sfnt_off00007b26.bin
88ba4ef63576884019674d27315fac78dfc925b125b7672a75d84fb7ed06e831		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B26 11332 bytes

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