Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec5585fc85c71cd5…

MALICIOUS

PDF

37.4 KB Created: 2020-08-18 23:23:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59e080de470d4ea644f7a21ff1e03891 SHA-1: 17657ce33307cb45c10cbca3ee8c9caae4aefab2 SHA-256: ec5585fc85c71cd50a8decadea10a903ec2c85aa1b19e46b3d1d7e298e80b752
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) or are hosted on content delivery networks. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that at least one of these links leads to known malicious infrastructure. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector. This suggests the PDF is designed to redirect users to malicious content, likely for phishing or malware distribution.

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.cc/pify?keyword=interpreting+graphs+worksheet+middle+school+science
    • http://sajutur.amandaheathphotography.com/uploads/1/3/2/6/132696030/69a61.pdf
    • http://duvog.youtransformingyou.com/uploads/1/3/1/3/131379935/1ba1879e3095.pdf
    • http://files.dixborochurch.org/uploads/1/3/1/3/131384121/kixurub_rovepigo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9536/6559/files/sekanoxifebitidi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4523/1509/files/benzoato_de_sodio_como_conservador.pdf
    • https://cdn.shopify.com/s/files/1/0439/9579/1518/files/input_file_accept_doc_docx.pdf
    • https://cdn.shopify.com/s/files/1/0432/7545/2569/files/60814617333.pdf
    • https://cdn.shopify.com/s/files/1/0430/6698/2561/files/91004818480.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/zovokexeviturapapezopiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/8166/1600/files/demigel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52135332303.pdf
    • https://cdn.shopify.com/s/files/1/0433/7231/4778/files/android_bitmap_xml_attributes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68513135127.pdf
    • https://cdn.shopify.com/s/files/1/0434/2464/5272/files/lipaja.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_off0000527f.bin
893bae50fc0570d9fe1fa4f0d0e3fd9737182666188e73fc0b974912b7fe1ede		 pdf-font-stream PDF embedded font (sfnt) at offset 0x527F 5580 bytes
font_01_sfnt_off00006554.bin
cb57e4a56a28852ae3331ca5f52cdf921aa53e80ae82ded6ca055805ffe07425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6554 10416 bytes

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