Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5f7168b50e7f21…

MALICIOUS

PDF

45.0 KB Created: 2020-08-06 17:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bf222102a330123c25cc2ed0b7befaa SHA-1: e087e106d49a9fcec9d97c418e031fd0408917af SHA-256: 2d5f7168b50e7f21e245bb7ac0a8185352f7fc8748886c863a9682a3b2a155d8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links pointing to PDF files hosted on Shopify, a technique often used for SEO poisoning or to obscure malicious redirects. One of these links, https://ttraff.ru/pify?keyword=baf%25C3%25B6g+berlin+antrag+pdf, is flagged as a known malicious redirector. The document body contains garbled text and the same malicious URL, suggesting it's a lure to direct users to malicious infrastructure.

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.ru/pify?keyword=baf%25C3%25B6g+berlin+antrag+pdf
    • http://files.touchedbyanangelmassage.net/uploads/1/3/1/8/131871740/mugokosewelabu.pdf
    • http://files.smsmediacenter.com/uploads/1/3/1/4/131453684/4454150.pdf
    • http://files.ontarioexplorations101.com/uploads/1/3/2/6/132681308/1465890.pdf
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/lalubukulo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0937/5383/files/70200861835.pdf
    • https://cdn.shopify.com/s/files/1/0440/6041/0006/files/round_in_python.pdf
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/98344581131.pdf
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/30118597022.pdf
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/94660834275.pdf
    • https://cdn.shopify.com/s/files/1/0428/7977/8979/files/wasewili.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/43860396829.pdf
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/fugevex.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/vovetuvudewesotudi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6575/files/70647162487.pdf
    • https://cdn.shopify.com/s/files/1/0438/1917/2000/files/vusefutobenogudimeku.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_off0000615c.bin
55fa9674c36313be1065e4ec09329ca84d1a734def60f13ca0f49883f161851e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x615C 5036 bytes
font_01_sfnt_off00007286.bin
9dfc6a03baa801f25771c6a827298f0c6b5805936bf7ec6a8c8f966e8eda95fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7286 11256 bytes
font_02_sfnt_off00009768.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9768 4324 bytes

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