Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e54403b54106e70…

MALICIOUS

PDF

37.1 KB Created: 2020-08-12 18:26:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e2e86720b3cff7fa28f8880ee4f4cb0 SHA-1: 535c018d34372efbbb5606543c7a5df7bced54a1 SHA-256: 2e54403b54106e70038478421e8c8d6caf241eaeefbd637283881f4157a8fe74
128 Risk Score

Malware Insights

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

The PDF contains a deceptive lure related to 'English grammar pdf in odia' and includes a mass of external links, many hosted on Shopify, forming a link farm. One of these links, 'https://ttraff.ru/pify?keyword=english+grammar+pdf+in+odia', is identified as a malicious redirector. The presence of a visual download button further supports the malicious intent of directing users to potentially harmful content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=english+grammar+pdf+in+odia
    • http://files.courseyfamilyfarm.com/uploads/1/3/2/6/132695620/bizinomure.pdf
    • http://files.wildlifetreasure.com/uploads/1/3/1/4/131452841/gafutote-zenukato-xomixugijaz.pdf
    • http://files.goblinbabymovie.com/uploads/1/3/0/7/130775922/f8b7739e8bb.pdf
    • http://files.kununurramarkets.com/uploads/1/3/1/8/131856844/a074ed604a00fd.pdf
    • http://files.mscott.info/uploads/1/3/0/9/130969297/kikokenu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2040/9256/files/pulobega.pdf
    • https://cdn.shopify.com/s/files/1/0433/3889/1419/files/how_to_become_a_good_motivational_speaker.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/fojozoponuvom.pdf
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/fabofu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1703/6198/files/30375268875.pdf
    • https://cdn.shopify.com/s/files/1/0437/7454/1981/files/apache_tomcat_server_administration_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/2063/8632/files/wujozemeketavedet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/nebifuwovezusorefeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/88473214696.pdf
    • https://cdn.shopify.com/s/files/1/0428/6598/3655/files/92351291734.pdf
    • https://cdn.shopify.com/s/files/1/0431/6764/5857/files/wanufuzebamesu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9352/4634/files/chalazion_traitement.pdf
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/wozepokebaviweke.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_off0000510c.bin
e67edddbfff09e5fd80b62a3bb681f8627ec6c430b730f3311734232a7830d95
pdf-font-stream PDF embedded font (sfnt) at offset 0x510C 5412 bytes
font_01_sfnt_off00006343.bin
f78513211a5efd48da47fb533b93917f18d6e4766d2872c50b2098661514ae71
pdf-font-stream PDF embedded font (sfnt) at offset 0x6343 10520 bytes