Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d161f7ef92f8e8b…

MALICIOUS

PDF

41.4 KB Created: 2020-09-07 20:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c473476ae891aa4a8623185e8a47a95 SHA-1: e29a68e7bcf1dc45e053ed2b05221b16fd1f68eb SHA-256: 2d161f7ef92f8e8b2b292ed700dffa512e06ffb7174b9e548dd821f0107d072b
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains the text 'Broken heart boy images' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous other links to PDF files hosted on cdn.shopify.com indicates a link farm, likely for SEO poisoning or to obscure the primary malicious destination.

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.club/pify?keyword=broken+heart+boy+images
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/26207698455.pdf
    • https://cdn.shopify.com/s/files/1/0430/7592/8215/files/wezugovit.pdf
    • https://cdn.shopify.com/s/files/1/0432/1830/5179/files/rappel_anatomique_de_l_oeil.pdf
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/xugotebuxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6671/2479/files/39496408984.pdf
    • https://static.usrfiles.com/ugd/b8c837_75ab08b098444edba480403e2c7413b3.pdf
    • https://static.usrfiles.com/ugd/cf79db_716a25dccf1f41619c7b475c0fc2931c.pdf
    • https://static.usrfiles.com/ugd/83f04e_e677804bc7ec4c4992adaae6d13cdc20.pdf
    • https://static.usrfiles.com/ugd/ccb1c6_4344ff0999614253b2c03e5a14e0d1a4.pdf
    • https://static.usrfiles.com/ugd/8ade13_897db0902c704d61929394e73ebc4960.pdf
    • https://static.usrfiles.com/ugd/b5472a_6e51dcb21b384e3a9431a864ba39b963.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/linear_equations_solve_for_x_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3366/files/differences_between_american_and_british_english_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/tazogazasiloredujowume.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_off000066e6.bin
107465a1aeddf4f31b7fb460ff42c6a949427d0bdbff156d17fee11a52133b8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E6 5420 bytes
font_01_sfnt_off0000793b.bin
30d18361980ea79d51b45391046121dfa0946fa27edbeaa3334f5f6a0cb90d72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x793B 9348 bytes

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