Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfca1bcf8864bada…

MALICIOUS

PDF

89.1 KB Created: 2020-08-11 21:29:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3df5a8622a7d9ecfef51dc15d73822d0 SHA-1: bb996f8449f1895697295cf5e197b18bd680a322 SHA-256: cfca1bcf8864badaf41ff05f407cdfc467787d6cfa4e3c71abbca217c0490d23
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1059.001 PowerShell T1204.002 Malicious File

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. The document body also contains this URL, suggesting it's the primary lure. Additionally, a heuristic indicates the document instructs users to interact with command-line tools, potentially to execute downloaded payloads. The presence of numerous benign Shopify links suggests an attempt to blend in with legitimate content.

Heuristics 4

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=automate+boring+stuff+with+python+free+pdf
    • http://files.ceciliabramhallart.com/uploads/1/3/0/7/130738852/fexusoj.pdf
    • http://files.ricotroostphotography.com/uploads/1/3/1/8/131871721/vuwezezadetime_vegik.pdf
    • http://files.deannapaulsen.com/uploads/1/3/0/9/130969593/2471376.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/38289964548.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8486/files/simigu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/24157116033.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/pastest_mrcp_paces_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zijilo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/lic_jeevan_shanti_850_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/7087/1970/files/43293215106.pdf
    • https://cdn.shopify.com/s/files/1/0428/8764/3302/files/14614123768.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/rorulugolafakudotoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5752/8480/files/42974596542.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/kefukurojativo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6135/3371/files/tuvolowodeteduf.pdf
    • https://cdn.shopify.com/s/files/1/0436/0205/1229/files/gimonutijuxokesukaji.pdf
    • https://cdn.shopify.com/s/files/1/0433/7224/9251/files/auxiliary_verbs_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/wordly_wise_3000_book_7_lesson_4.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_off0000fc5f.bin
2da0392a2468e79e9e30c8d114305a9381492b06fee336a204572842f706e245		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5F 5748 bytes
font_01_sfnt_off00010fcd.bin
e66ea14c3932c1882ad6dec9fa3ebf8f47cf783af7bf169594f7d941611aa00a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FCD 14736 bytes
font_02_sfnt_off00013e5c.bin
1ecb2d6f5b17e9cd0e28e9829e60c379dee421bb99058dfd930a5396a2ca3bf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E5C 17500 bytes

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