Malicious PDF — malware analysis report

Static analysis result for SHA-256 d26b567951f987ad…

MALICIOUS

PDF

41.9 KB Created: 2020-08-02 06:38:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 872b32ca5dd9c79468dea5643c0123ed SHA-1: 7fc6eef7ecb06f726fa49c00c579b92c74e7e5f7 SHA-256: d26b567951f987ad838e0430fec2c2e7f16a109dc7c40e09bcb31b914d15b84e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was identified as malicious due to the presence of a large number of embedded links, forming a link farm. One of these links, 'https://ttraff.com/pify?keyword=the+birdcage+cast', points to a known malicious redirector. The document body contains obfuscated text and references to 'The birdcage cast', likely a lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the redirection to malicious infrastructure, and 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, typical of SEO poisoning or phishing campaigns.

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=the+birdcage+cast
    • http://files.leakedesigns.com/uploads/1/3/1/3/131384113/69495.pdf
    • http://files.drheatherloenser.com/uploads/1/3/0/9/130969334/deabd0921c416a.pdf
    • http://files.nhfrea.org/uploads/1/3/1/4/131437848/vulatele-fetipi-namuxojufetosa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/77137427373.pdf
    • https://cdn.shopify.com/s/files/1/0431/7439/6063/files/wiwomevaseketipudut.pdf
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/68779364142.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/14512515307.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/wuzuxet.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/68578308847.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/casio_ctk_2400_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/gugorilemuku.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/44286119329.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29121996303.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/zapulebokavit.pdf
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/miborunovowoz.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_off0000658a.bin
f5981310176d93d8fc24f1c2afa84dc761988f703c286534ddb267b731be06e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x658A 5260 bytes
font_01_sfnt_off00007759.bin
14a9486373a83eb1edc6d8c1db70ea4aba4ce773648d8f0cb9fb2f74064868eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7759 10604 bytes

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