Malicious PDF — malware analysis report

Static analysis result for SHA-256 8985aece78ec1baf…

MALICIOUS

PDF

40.3 KB Created: 2020-08-30 11:04:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 848b4464785d0e61c5786d9289447b13 SHA-1: 0df63bcac46ee758d9b22836afaa2753e5f1a0c6 SHA-256: 8985aece78ec1baf670bd0e443588364971e6bb7cbfc56b1e4df51c7cd044b04
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to shopify.com, but one critical link to 'ttraff.cc' is flagged as malicious. This suggests a link farm or SEO manipulation tactic to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the malicious URL and references to technical terms like 'Trane water cooled screw chiller with vfd', likely as bait. The primary malicious URL is https://ttraff.cc/wix?keyword=trane+water+cooled+screw+chiller+with+vfd, which is likely used to redirect users to a phishing or malware distribution site.

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/wix?keyword=trane+water+cooled+screw+chiller+with+vfd
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/inflammatory_myopathy.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/57001336003.pdf
    • https://cdn.shopify.com/s/files/1/0437/0278/0072/files/silovufidofiluzifu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6111/files/kotul.pdf
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/846651182.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/95254595818.pdf
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/lirijitutenari.pdf
    • https://static.usrfiles.com/ugd/565485_c561570f37c54bc490358d1bdd297a57.pdf
    • https://static.usrfiles.com/ugd/98e298_5ba211822b184c878fb117b8a356d4d3.pdf
    • https://cdn.shopify.com/s/files/1/0434/7320/7446/files/magic_the_gathering_shandalar.pdf
    • https://cdn.shopify.com/s/files/1/0458/0963/1398/files/management_summary_powerpoint_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/1286/5693/files/wifejopejafuvivopexakim.pdf
    • https://cdn.shopify.com/s/files/1/0438/0504/8994/files/gibururevagironegev.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/gesaxod.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_off00005bd1.bin
c3c7c9bfea92037436b934a6060a8a487de6f6a92615e5ae22f4f22260ff1030		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD1 5212 bytes
font_01_sfnt_off00006d93.bin
784e601c76577a33cddc6aa988163f34d64e63574d5ef912a7bbd6ee895968d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D93 12356 bytes

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