Malicious PDF — malware analysis report

Static analysis result for SHA-256 5721617298e70b06…

MALICIOUS

PDF

33.8 KB Created: 2020-08-21 08:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cfd7f9fe3e8545d5cf7458f8f4cf596 SHA-1: f929e44db6b09807b4ba17396c023ba7f3b5c611 SHA-256: 5721617298e70b06f3f94613ebea981cb1bbe2a96934fc81fa9006d333dd0365
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic firing indicating a link to known malicious redirector infrastructure. Another heuristic identifies a large external PDF link farm. The document body contains garbled text and a URL that appears to be part of the link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=lagu+capture+the+crown+firestarter, which is likely used to redirect the user to a malicious site.

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.cc/pify?keyword=lagu+capture+the+crown+firestarter
    • http://sopisu.jenkatz-buonincontro.com/uploads/1/3/1/1/131164250/4717401.pdf
    • http://midage.lymeregisu3a.org/uploads/1/3/2/7/132741508/lizisaforefeloku.pdf
    • http://files.cristinaperez.tv/uploads/1/3/0/7/130739590/pifuku.pdf
    • http://bigegumi.thegoldshopofmartinez.com/uploads/1/3/0/9/130969060/redimejuvelugadideka.pdf
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/bugdom_2_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/91022240723.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/tomilugasi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2913/4501/files/gavanesutifovijemiduxiko.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/gesixorexuxegatin.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/89677897816.pdf
    • https://cdn.shopify.com/s/files/1/0443/0246/7228/files/children_s_books_online.pdf
    • https://cdn.shopify.com/s/files/1/0434/4519/0821/files/advanced_business_writing_skills.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/72510765338.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_off000045b6.bin
d573f31b0c77369cfad81c02b31d2562988527bcad5313d8737c52ad134128ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45B6 5276 bytes
font_01_sfnt_off000057c1.bin
7d23ca342fbdd6159d9d1050be628a07fecd768075f6fe49a66cf9e37056eef7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C1 10132 bytes

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