Malicious PDF — malware analysis report

Static analysis result for SHA-256 b395207721465fc0…

MALICIOUS

PDF

46.3 KB Created: 2020-08-17 17:17:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b6f3a7732794a0790233b4c1c63de58 SHA-1: c383377dab8d23a993460f2cd694bd9b1d5bc145 SHA-256: b395207721465fc0f09a32f0b2ee21ad8c8b35425cc744a46ea5bd86a758cdc2
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though partially corrupted, contains text related to 'free able graduation announcement templates' and the malicious URL. This suggests a social engineering lure to trick users into visiting a potentially harmful site. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation to increase visibility.

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=free+able+graduation+announcement+templates
    • http://files.djpesty.com/uploads/1/3/2/7/132740515/b9614de39193fba.pdf
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/wanonelerasamikigaf.pdf
    • https://cdn.shopify.com/s/files/1/0439/0407/3880/files/14189479616.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/publication_15-_a.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/vuzaw.pdf
    • https://cdn.shopify.com/s/files/1/0449/6316/8415/files/adobe_acrobat_reader_for_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/risekumomivedopela.pdf
    • https://cdn.shopify.com/s/files/1/0431/5932/2778/files/behavioral_therapy_for_adhd.pdf
    • https://cdn.shopify.com/s/files/1/0437/6068/1111/files/vugibagufotejotifami.pdf
    • https://cdn.shopify.com/s/files/1/0428/7512/5919/files/sevudepeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/1094/8254/files/83770701419.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_off00006b72.bin
2c27ebe84628b90598f3f6bbd5efdeb95590c576e4de8623c8b618ef0675daaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B72 5488 bytes
font_01_sfnt_off00007dfb.bin
0d2e02d14f46f079736dc8142d4485856ebab0a4ad6925a5f712c081f4d79e68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFB 15168 bytes

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