Malicious PDF — malware analysis report

Static analysis result for SHA-256 c261795540d3e2ec…

MALICIOUS

PDF

40.0 KB Created: 2020-08-08 12:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 639ee148f23178c7a7a62d768576caee SHA-1: f921bdd23b1bda846b214c16e99f821fcc7a9ce8 SHA-256: c261795540d3e2ecd4b494b2e58f4e9bf579c586a39eedebb8b5af14abe1b89f
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure to convert documents, which is a common tactic for phishing or malware delivery. It embeds multiple links, with one identified as a malicious redirector pointing to 'ttraff.ru'. The document body and heuristics indicate a link farm strategy, likely to obscure the final malicious destination. No scripts were extracted, but the presence of malicious redirectors and the SEO link farm technique suggest a drive-by download or phishing attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=convert+pdf+to+editable+word+doc+online+free
    • http://podarob.freedom2gait.com/uploads/1/3/0/9/130969204/c50e285062690.pdf
    • http://files.hudsonlock.com/uploads/1/3/1/6/131608016/jadilan-sitovana.pdf
    • http://faner.stalbanscursillo.com/uploads/1/3/1/4/131406717/wuxido_dizawojuw_gudojozabipis.pdf
    • https://cdn.shopify.com/s/files/1/0434/3712/9895/files/craftsman_lawn_mower_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/4324/8545/files/78995488896.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/vumusoxokapapulu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/project_report_on_cadbury_chocolate.pdf
    • https://cdn.shopify.com/s/files/1/0429/4085/8527/files/22814337674.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/dokil.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/xibosani.pdf
    • https://cdn.shopify.com/s/files/1/0436/0493/4814/files/8255958976.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/76350909654.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/how_to_convert_word_document_to_on_mac.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_off00005ed2.bin
e2d164a9b70d7089f1f67ec363e36b265032bff26d29a7ca6e165d72a5e2feb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED2 5168 bytes
font_01_sfnt_off00007083.bin
89ead9f40af74ff4458f3fbaa242b5013f03d29375ff29c57ae9b2a005f82f7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7083 10084 bytes

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