Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cd68687b7918e9c…

MALICIOUS

PDF

44.9 KB Created: 2020-08-06 15:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cbe6779ca17e8a3125a7f629697f91f SHA-1: 30ce5196ebe1830183e97e29af9bbc3d0e9ea2dc SHA-256: 4cd68687b7918e9cf510965276e49a8c3fce50f7b8de09ef6f1eb2975fc7c25a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'https://ttraff.cc/pify?keyword=cfop+all+algorithms+pdf'. This suggests the document is designed to lead users to malicious content through a series of redirects. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or redirection attack.

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=cfop+all+algorithms+pdf
    • http://files.summersautomotivedetailing.co.uk/uploads/1/3/2/3/132302764/beziwum.pdf
    • http://files.ag-energy.com.au/uploads/1/3/1/4/131437423/ac99ab73d3e396.pdf
    • http://jogegim.boostyourbodybootcamp.com/uploads/1/3/1/3/131381428/bugufo-pibanatinoj-dofaluwamofedog.pdf
    • http://files.hbsculptures.com/uploads/1/3/0/7/130775084/remejivaduluxuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/80500120046.pdf
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/kagudenas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/davunaxejapezuxipuwuwozom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65621046881.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/wowajizuxox.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/html5_canvas_game_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/61496848215.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1016/files/editing_file_in_adobe_reader.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/ragokifefofarebegubat.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/56830020168.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_off00006703.bin
bc95a5e95db0ce3225a7b2400b9c3487af75db8ad4949a6644c597763e94a64b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6703 3276 bytes
font_01_sfnt_off000072bc.bin
4fdef58f6373238851e1ab860d9ca04a2530097a7d20f1f345241539728c0d3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72BC 5360 bytes
font_02_sfnt_off000084cb.bin
8faf645189f29004783c2c53467d43e8255d84c09e1ea4f6b41ead17aaf49f04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84CB 9800 bytes

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