Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb469ebaa9fb9b4…

MALICIOUS

PDF

67.1 KB Created: 2020-08-19 05:22:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cd1243b99d92c886b1075527d3ac656 SHA-1: b948bd4a086965e4fca70b48be76b6b9821963d4 SHA-256: edb469ebaa9fb9b4277387b7677af02d86a64ceb15363f08a61578952e07b44f
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a link farm. The primary malicious URL, https://ttraff.com/pify?keyword=calendario+liga+mx+femenil+apertura+2019+pdf, is a clear indicator of malicious intent. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of numerous external PDF links, many hosted on cdn.shopify.com, suggests a tactic to obscure the ultimate destination or to leverage seemingly benign domains for distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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.
  • 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=calendario+liga+mx+femenil+apertura+2019+pdf
    • http://files.coppercocktailco.com/uploads/1/3/0/7/130740521/nelobunod.pdf
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/luweradomumotag.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/46498054326.pdf
    • https://cdn.shopify.com/s/files/1/0440/8056/2326/files/enfermedades_congenitas_del_recien_nacido.pdf
    • https://cdn.shopify.com/s/files/1/0452/2960/5024/files/46263420298.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/dezisixarok.pdf
    • https://cdn.shopify.com/s/files/1/0433/1136/6309/files/bapisamajixakonolurewage.pdf
    • https://cdn.shopify.com/s/files/1/0430/6049/4485/files/numupubowag.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/vidufunoj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a567.bin
bd11d03d38d271d17f67b18b1ae1102aeee1f3fa5e2e700a6ffc9eac7cd8c257		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA567 5640 bytes
font_01_sfnt_off0000b896.bin
8cdb93f7d16df4831fb0a16e93b0306ebcb0cf12e02369b933c99292039751d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB896 16104 bytes
font_02_sfnt_off0000e926.bin
86a8e5c2e5b58c430a3261a18f098f04929e58ef6bd5afea77f7de70dce0ed09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE926 16064 bytes

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