Malicious PDF — malware analysis report

Static analysis result for SHA-256 50e37ea0a5896d38…

MALICIOUS

PDF

87.1 KB Created: 2020-09-06 17:49:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41e2cc303b14c2174d94238c8b4c4d4f SHA-1: 3ec5cee552492a711d05a7f30eb4a6872805069e SHA-256: 50e37ea0a5896d389afdff8dafe44d9c0abea5dd34ef642e0c9d50daf9d536d4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it's a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to 'Austria visa information' and the malicious URL. This suggests a phishing attempt to trick users into visiting a malicious site, likely for credential harvesting or malware delivery.

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.com/pify?keyword=austria+visa+information
    • https://cdn.shopify.com/s/files/1/0440/7354/9974/files/vscode_formatter_python.pdf
    • https://cdn.shopify.com/s/files/1/0440/0644/1110/files/double_displacement_reaction_lab_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2858/files/60377137837.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5394b67b6eb420ba181c0e7eca91549.pdf
    • https://static.usrfiles.com/ugd/5af86b_3d16be54b38340b48494fcad8b0efefd.pdf
    • https://static.usrfiles.com/ugd/81d6a4_711096f21dd84b56a00118fbec82ec0f.pdf
    • https://static.usrfiles.com/ugd/77941b_497b47aca9b04a959bd621658b179d4e.pdf
    • https://cdn.shopify.com/s/files/1/0455/4637/3285/files/applied_bayesian_statistics_with_r.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2512/files/1992_ford_f150_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9409/8598/files/9249906766.pdf
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/arcsight_connector_appliance_admin_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/miwuzunatejip.pdf
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/kitijoredapiler.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/sezuzawagoxoberakef.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_off00010788.bin
051f93a9b197e86c469769b392213065414f6e3f198c7d0654e0eefe823e25f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10788 5176 bytes
font_01_sfnt_off00011974.bin
92c91be9ddc242b32d97c72ec5631a8412ad412f20c3cfa121e6df111199f190		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11974 4932 bytes
font_02_sfnt_off00012a30.bin
24f78e1db8d1a5f8b89da6c17ce9de65185ece36c472d5796e50b2c691cee4ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A30 10788 bytes

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