Malicious PDF — malware analysis report

Static analysis result for SHA-256 acc84c2900ddf256…

MALICIOUS

PDF

42.2 KB Created: 2020-08-19 04:43:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 953d03cc2f1b4b2fa5be6313dd42fc22 SHA-1: c03c6d2419649278e6c5af669c06615352be79a5 SHA-256: acc84c2900ddf25679bc463f2eb46ff29f5f061ec1c757d832fbc967c0ca8a5b
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a 'sales contract agreement form' and includes the malicious URL. This indicates a social engineering attempt to trick the user into visiting a malicious site, likely for further exploitation or credential harvesting.

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=sales+contract+agreement+form
    • http://divetuvar.skirrowdesign.com/uploads/1/3/1/4/131407370/rewuxu_wixaluzowuzaxe_vixidobekix.pdf
    • https://cdn.shopify.com/s/files/1/0447/7734/1079/files/cambridge_english_pronunciation_dictionary_apk.pdf
    • https://cdn.shopify.com/s/files/1/0437/1100/4821/files/xarerubezefe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3537/files/segetad.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7321/files/boogie_woogie_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0434/8382/4294/files/36843786974.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/jufuveravulebimadonijep.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/irenaean_theodicy.pdf
    • https://cdn.shopify.com/s/files/1/0435/5473/4235/files/overactive_bladder_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0856/files/64962166008.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zaxolaxowixinetubosi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/kemigenix.pdf
    • https://cdn.shopify.com/s/files/1/0428/5726/7359/files/19715259428.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_off00006903.bin
71e73431c5ae16afd675556712e177462b78751482d06357854e43cf7c94d9ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6903 5304 bytes
font_01_sfnt_off00007ae6.bin
c10c68ee2e5553421cd03ba86dd57f550b84055e0a91c5494f9b161b5d71ce8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE6 9900 bytes

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