Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfad6371025e5e43…

MALICIOUS

PDF

41.3 KB Created: 2020-08-08 17:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7757c48c344b772efea33c43e94b4b01 SHA-1: 28b7a728f476c4da13b8b8a3daabf7f2adddcbff SHA-256: bfad6371025e5e4379282d58de2b39a57d31bcd3851f20466761bfde21218090
120 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to a malicious URL, disguised as 'interview questions and answers pdf for networking'. This heuristic indicates a phishing or social engineering attempt to lure users to a malicious site. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm techniques used to manipulate search engine results and distribute 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.com/pify?keyword=interview+questions+and+answers+pdf+for+networking
    • http://kolat.austintatiouseats.com/uploads/1/3/0/9/130969352/zijizidiwu.pdf
    • http://files.floristrycentral.com/uploads/1/3/0/7/130775598/zixaxirizazibamen.pdf
    • http://files.fxbrwanda.org/uploads/1/3/1/4/131407629/pubovijasexix-sefofaxapimubu-kajipowaz-mobabusoteguz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5308/0991/files/sawumol.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/sugapupoxutibaxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/kiadb_bye_laws.pdf
    • https://cdn.shopify.com/s/files/1/0437/0402/5242/files/13360803223.pdf
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/23199095158.pdf
    • https://cdn.shopify.com/s/files/1/0435/7668/8798/files/38531721597.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/lidevugekawosigudolezavo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/sevaxowusigomomotofom.pdf
    • https://cdn.shopify.com/s/files/1/0437/3564/6357/files/duwufenafizelakafevamabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9463/7734/files/exercices_amplificateur_oprationnel.pdf
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/73962293764.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/free_mechanical_aptitude_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/hankison_air_dryer.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_off000063c8.bin
e54b1b1efe3dab47e2ace42a3f7717874f74f643e34bd4524c48cb1494dac160		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C8 5456 bytes
font_01_sfnt_off00007679.bin
05bcaabc3c64f825d4cde76605653889a0a67e86aa9ebcbbf7343c9207d08dd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7679 9796 bytes

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