Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf219f776b802255…

MALICIOUS

PDF

56.0 KB Created: 2020-08-06 18:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ecf05c4cf47cfddc11f59d908b16b42 SHA-1: 229ef8b6581f4486c780bd0054ec9a6d71c25d74 SHA-256: cf219f776b8022555fa04d34f8f0454b20544255e762bf9416640909faa2d5a1
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of multiple Shopify URLs suggests an attempt to blend in with legitimate content while directing users to malicious sites.

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/pify?keyword=data+acquisition+system+basics+pdf
    • http://files.14th-thomas-more-international-days.com/uploads/1/3/0/7/130775398/9523563.pdf
    • http://files.youngmoneyskills.com.au/uploads/1/3/1/3/131378774/gadowo_kasizafikirazo.pdf
    • http://files.wilsonbaseballcamp.com/uploads/1/3/1/4/131453674/9764591.pdf
    • http://dekebupiw.joanneclarkephotography.com/uploads/1/3/1/4/131409090/tuzemuk.pdf
    • http://files.crmennonitechurch.com/uploads/1/3/0/7/130739170/derapakibakade.pdf
    • https://cdn.shopify.com/s/files/1/0431/5021/3274/files/47771156084.pdf
    • https://cdn.shopify.com/s/files/1/0429/2716/1507/files/82538388136.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9680354999.pdf
    • https://cdn.shopify.com/s/files/1/0434/2910/1735/files/torrent_vr_porn.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/tonarijubagu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/94259301204.pdf
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/jinigidaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8514/files/jivopuworul.pdf
    • https://cdn.shopify.com/s/files/1/0439/1557/5464/files/zorumaxolejet.pdf
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/54870801665.pdf
    • https://cdn.shopify.com/s/files/1/0440/0365/5830/files/current_affairs_january_2020_affairs_cloud.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_off000094fc.bin
5e0d6c03787ed00a4aba2a35a3f0b837ac0f5d01ea299b42a55f1dea9580fcd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94FC 5540 bytes
font_01_sfnt_off0000a7cc.bin
eeab0b9929f6d8dac2da1de2471531ab5f94731720d519786f9605520edc619f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7CC 13624 bytes

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