Malicious PDF — malware analysis report

Static analysis result for SHA-256 c42c2a688a2c37c4…

MALICIOUS

PDF

62.8 KB Created: 2020-08-25 14:26:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e167d38db97c90312c5f6d036916d33 SHA-1: f8c430bf53d9ea49d0adb36a783ac013daf84e31 SHA-256: c42c2a688a2c37c410e246e51d66fc389b2570dcd52eabd8819046191b9f1b6b
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation to increase visibility.

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=telecharger+adblock+plus+chrome+android
    • http://jadibi.nulineeducon.com/uploads/1/3/0/7/130775803/vusujaxosow.pdf
    • http://files.designsbygiacomo.com/uploads/1/3/1/8/131871745/nijokupe-tovozurubo.pdf
    • http://files.centerforpilates.com/uploads/1/3/0/7/130738859/bubuv-pamirokopage-vewokijibizug-debimupapoleba.pdf
    • http://files.archaeospain.com/uploads/1/3/0/7/130775025/pozebavaboran.pdf
    • http://files.grottonsinchile.org/uploads/1/3/2/7/132740413/sojudade-sugonas-gasatis-gesazuvujiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/6127/9894/files/allen_aiims_test_series.pdf
    • https://cdn.shopify.com/s/files/1/0433/9384/3356/files/introduction_to_heat_transfer_bergman.pdf
    • https://cdn.shopify.com/s/files/1/0439/0669/5320/files/capital_humano_recibos_de_nomina.pdf
    • https://cdn.shopify.com/s/files/1/0429/2483/4982/files/90615572153.pdf
    • https://cdn.shopify.com/s/files/1/0437/6756/2392/files/kikozuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/6100/8791/files/jubasipogaxusire.pdf
    • https://cdn.shopify.com/s/files/1/0438/5583/9392/files/24164167136.pdf
    • https://cdn.shopify.com/s/files/1/0465/5330/1142/files/31949033923.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9504/files/4755592595.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/angry_whatsapp_status_video.pdf
    • https://cdn.shopify.com/s/files/1/0431/0591/0933/files/69823726097.pdf
    • https://cdn.shopify.com/s/files/1/0431/1348/0354/files/gebiderimalotevat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009aea.bin
6c8080510c131c71ccf63d8c047927c8d495841dd5b602cd5b032c18a290727e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AEA 5640 bytes
font_01_sfnt_off0000ade8.bin
25479e8b9bed0914d335ee611b6bddf8b2cfde20ea3a782f8c371b9fee2f1493
pdf-font-stream PDF embedded font (sfnt) at offset 0xADE8 10900 bytes
font_02_sfnt_off0000d32a.bin
2e2406a23c4eda4333e1700c11bf9bf530ea6b24fb47f233129a6652b68d8e8d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD32A 17444 bytes