Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc8f719c0e41cf0…

MALICIOUS

PDF

41.0 KB Created: 2020-11-04 02:06:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bbe5fd94dcd342c0373f932c7874d46 SHA-1: d49babc9499780e1cb0e6a78472d6ccde811cb1f SHA-256: 6dc8f719c0e41cf0e580f5e694e9b8fe76b0cce9fa51ed7a763e8c50cef46e08
94 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The embedded URL is presented as a download for 'piano tiles 3 app free download', suggesting a social engineering lure. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary threat is the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.link/123?keyword=piano+tiles+3+app+free+download
    • https://cdn-cms.f-static.net/uploads/4384483/normal_5f9cda61c4ffc.pdf
    • https://cdn-cms.f-static.net/uploads/4382406/normal_5f90d8b24ee4d.pdf
    • https://cdn-cms.f-static.net/uploads/4387562/normal_5f8d591f0463b.pdf
    • https://cdn-cms.f-static.net/uploads/4393036/normal_5f91954579d27.pdf
    • https://cdn-cms.f-static.net/uploads/4392668/normal_5f9ed9bed4a31.pdf
    • https://cdn-cms.f-static.net/uploads/4388827/normal_5fa1e38825321.pdf
    • https://cdn-cms.f-static.net/uploads/4404123/normal_5f91bc8ed0f8e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/539b9703-f5b2-45c8-a304-29cf134e83c6/24482223554.pdf
    • https://s3.amazonaws.com/jevuxozazebazug/rakulamatovanunovakuxata.pdf
    • https://s3.amazonaws.com/xanebavifamopez/backorder_processing_in_sap_sd.pdf
    • https://uploads.strikinglycdn.com/files/22b63ad0-806c-4b84-b517-8b97c4e347fc/ellinika_biblia_download.pdf
    • https://s3.amazonaws.com/zalomi/51224602818.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_off00006162.bin
b00bd3347b0ff236e8bc2147bf1ab1337e879d46af8c881dc60426d15af578f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6162 5292 bytes
font_01_sfnt_off00007381.bin
e72a9bee32914e4950637cbde6107e42abc63e2a29dc63be05af9104f17c571c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7381 10484 bytes

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