Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ee6fae2d944dca8…

MALICIOUS

PDF

51.0 KB Created: 2020-08-08 23:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdb9fc708434834acf47bb47f94c7810 SHA-1: 7f2fe1462c554c0a45eb94ad0ce10bf87d57bede SHA-256: 1ee6fae2d944dca8e320a85d1dd5cc6c3eef0f295c9a4dc0b9dab620372d0264
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'broken glass book pdf'. The presence of a link farm and a malicious redirector suggests an attempt to drive traffic to malicious sites, likely for further exploitation or phishing. No scripts were extracted, and the primary malicious activity observed is the redirection via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=broken+glass+book+pdf
    • http://files.pemichoral.org/uploads/1/3/0/7/130776277/a56fad308dd9.pdf
    • http://jisas.autoadvisorsnh.com/uploads/1/3/0/7/130739024/xozisikupogom_riwasepotebix.pdf
    • http://files.redfieldfarms.com/uploads/1/3/0/7/130775304/1896216.pdf
    • https://cdn.shopify.com/s/files/1/0440/3340/9174/files/general_supplies_company_profile_in_kenya.pdf
    • https://cdn.shopify.com/s/files/1/0445/6503/7220/files/how_to_operate_a_cash_register.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1518/files/silonajorakaxosobatemo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4687/1974/files/rokadatu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5090/7286/files/juziwexodadupuvowijibakax.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/how_to_update_kali_linux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fatexuxutul.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/71057344951.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/14067123391.pdf
    • https://cdn.shopify.com/s/files/1/0437/0402/5242/files/west_african_countries_and_their_capitals.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_off000089f0.bin
23cfa9a36215b80071b70a91c882c3b1419684d24d49efc06daa967c9d81f191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89F0 5464 bytes
font_01_sfnt_off00009c98.bin
ecfc2a8c7e3f2927e6c24fa4c403e48929216209a50764e41fa92fe7be9f4c13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C98 10240 bytes

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