Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e4f256b5900238d…

MALICIOUS

PDF

62.3 KB Created: 2020-08-08 11:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 683f4adf82c59377de4655c82343aa79 SHA-1: 2628f002980d249b9f5a2f1a240a8bcf9ea999c7 SHA-256: 1e4f256b5900238de0c6ca5c91bee388f92c652b0e72b155300ce363f4cfae74
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that is likely intended to lure the user into clicking on it. This suggests a phishing or redirection attack aimed at delivering further malicious content.

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.ru/pify?keyword=international+capital+markets+pdf
    • http://files.nccdba.com/uploads/1/3/0/7/130776728/kufurobixa_zabimijuwinog_gudijitin_torama.pdf
    • http://files.thesledshed.net/uploads/1/3/1/0/131069915/8d252b1d5.pdf
    • http://files.kpotterfineart.com/uploads/1/3/2/6/132681877/nonufanuwifowul.pdf
    • http://files.davidbosephotography.com/uploads/1/3/1/4/131483009/887848.pdf
    • https://cdn.shopify.com/s/files/1/0430/3080/6679/files/teluduzuwiwovuzadesetore.pdf
    • https://cdn.shopify.com/s/files/1/0428/4170/2567/files/2269263253.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/rokulikazubigare.pdf
    • https://cdn.shopify.com/s/files/1/0436/9242/5384/files/pawudidozik.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4992/files/timaxeradibom.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/memorex_label_maker.pdf
    • https://cdn.shopify.com/s/files/1/0429/8748/7385/files/pekitusebefav.pdf
    • https://cdn.shopify.com/s/files/1/0433/3040/4502/files/71251136376.pdf
    • https://cdn.shopify.com/s/files/1/0434/4607/5554/files/dezago.pdf
    • https://cdn.shopify.com/s/files/1/0429/0487/9271/files/96664092597.pdf
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/jijewamomesaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8965/files/cub_cadet_lt_1045_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5185/9616/files/dilafafuxulaxazuzu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/18030779937.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_off0000b6c1.bin
4b2210b4b59cdb07d90c410789a9a8f610768ffcdf8ce4781da8b1a9bfccbcfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6C1 5304 bytes
font_01_sfnt_off0000c8b5.bin
5059ede1df2a00fb1025c71ccce11609f76d27833e876243206be476d34a1f7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B5 10304 bytes

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