Malicious PDF — malware analysis report

Static analysis result for SHA-256 560e85b67f7541fb…

MALICIOUS

PDF

56.2 KB Created: 2020-09-01 09:55:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61d8fa156b9089e9235d7fe20a3cac9f SHA-1: 2ed3624adbc6699cdc6a6018cc40374c6943f7c0 SHA-256: 560e85b67f7541fb9ed20af894c2da4ae12f4c13766bec03fb690c5ef285ab91
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a PDF link farm. The primary malicious URL, https://ttraff.ru/pify?keyword=jquery+ajax+return+json+format, is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to 'jquery ajax return json format' and the malicious URL, suggesting a lure to a phishing or scam page.

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=jquery+ajax+return+json+format
    • https://cdn.shopify.com/s/files/1/0434/0301/8392/files/formal_letter_to_a_couple.pdf
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/ruseg.pdf
    • https://cdn.shopify.com/s/files/1/0432/3275/5875/files/44250173034.pdf
    • https://cdn.shopify.com/s/files/1/0434/7920/3992/files/jumbled_sentences_for_class_9_with_answers.pdf
    • https://static.usrfiles.com/ugd/ac51ce_742ca2b01a7f4f67a0f6258f4c5779cd.pdf
    • https://static.usrfiles.com/ugd/cf14a4_573ffd000bf44fcdb6cb753c9b5fcf37.pdf
    • https://static.usrfiles.com/ugd/b8c837_c08fcbbed20741a2b12fb4785c554676.pdf
    • https://static.usrfiles.com/ugd/98857b_2a181aa7a8fd4549ae3ca40498e344f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_112e37d575d94b13ad97b65818674c2e.pdf
    • https://cdn.shopify.com/s/files/1/0460/0142/2497/files/ganapati_atharvashirsha_in_marathi_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/einthusan_hd_movies_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0434/6796/4580/files/miwuxaw.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_off00009b58.bin
90d73ca3e8a638a143236656c9f05fc841d12fa2dbcc1915942debdc8cfc17e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B58 5240 bytes
font_01_sfnt_off0000ad34.bin
115981c8b6d3305befd923a3e71c5f545d1dbbe9d1f10954ff80889de5d175a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD34 11416 bytes

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