Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee09ec46b9cf0a7…

MALICIOUS

PDF

38.2 KB Created: 2020-08-22 20:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35fd32f38403eb44f52a07e33968ff80 SHA-1: 74ddfb228d6963178a0da0059725dd8dcffa5aa8 SHA-256: dee09ec46b9cf0a70a8fe612fba5f7ab0b1c82936e5574993eec3f781df117c4
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text referencing 'Entrepreneur magazine january 2018 pdf' and includes the malicious URL, suggesting a lure to download or view content. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to host further malicious content.

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.com/pify?keyword=entrepreneur+magazine+january+2018+pdf
    • http://bixesok.marcyscreativecookies.com/uploads/1/3/1/4/131406202/suwufusukoxavisorelu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/795090230.pdf
    • https://cdn.shopify.com/s/files/1/0428/5743/1199/files/python_language_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/rovavijerepufuzevi.pdf
    • https://cdn.shopify.com/s/files/1/0439/3798/8766/files/vofegokabujanunemega.pdf
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/vamijopav.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8951/files/dometic_air_conditioner_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/livim.pdf
    • https://cdn.shopify.com/s/files/1/0431/5676/6882/files/55695796560.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005547.bin
c87086cf42cb89fb9029713a8f133a8b21dee1d47e2d9d8a8647b1aefd408022		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5547 5856 bytes
font_01_sfnt_off00006933.bin
ef66b0187f1525784d693a738829368b5203b1f96c92c84061241a9f2a67fcf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6933 10284 bytes

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