Malicious PDF — malware analysis report

Static analysis result for SHA-256 87f5fd79614bfe2f…

MALICIOUS

PDF

55.9 KB Created: 2020-08-06 22:12:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0133acdb48564fd9cf6d22ed5cbae16f SHA-1: fc3d17f4dff8167911d1d9d4ae29ef587e02751d SHA-256: 87f5fd79614bfe2f13e0ad838861844dca1b47884aa072c7ebedcd3a90e70ab3
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. Additionally, it hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or traffic redirection. The document body, though heavily obfuscated, contains the malicious URL. The primary attack pattern involves luring the user to click the embedded link, likely leading to further malicious content or downloads.

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.com/pify?keyword=anticancer+a+new+way+of+life+free+pdf
    • http://files.internallyflawless.net/uploads/1/3/1/3/131380213/98ac0e858fec17.pdf
    • http://files.davejoy-author.com/uploads/1/3/0/9/130968949/0884c6e.pdf
    • http://files.p3oriontopsecret.com/uploads/1/3/1/3/131379266/cc1ae5bd.pdf
    • http://files.maternitybabyacademy.com/uploads/1/3/1/4/131453902/3b5b8f60.pdf
    • http://files.opalcarving.com/uploads/1/3/1/0/131070294/mabafenerajunubinoba.pdf
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/8310848370.pdf
    • https://cdn.shopify.com/s/files/1/0436/9275/3049/files/fodefelirejozi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/19179287838.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/75981147166.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/regajemozem.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1030/files/mujomarijajatesuxos.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/3667498340.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/burunetewavonu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8839/files/degeromupipezemufof.pdf
    • https://cdn.shopify.com/s/files/1/0434/8605/2504/files/30843692786.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0226/files/10194061792.pdf
    • https://cdn.shopify.com/s/files/1/0432/3321/4621/files/surisotozerisov.pdf
    • https://cdn.shopify.com/s/files/1/0437/0006/0310/files/ravawujidasatex.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/69297024240.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007131.bin
e53328c7652dabda2398bd769d972d0959a9f45eb4c6c522846efcb3daa6d8bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7131 4940 bytes
font_01_sfnt_off0000820b.bin
a511fb262e2f240b0cc62b800179189f1c69c7b4d67d938f9bc0c5e12ef74554		 pdf-font-stream PDF embedded font (sfnt) at offset 0x820B 2024 bytes
font_02_sfnt_off00008ba0.bin
462edea7304f74b8df42255d1477c5d303f34562493ff55988543ff51bdbd838		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA0 10040 bytes
font_03_sfnt_off0000ae36.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE36 16164 bytes
font_04_sfnt_off0000c34f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC34F 4324 bytes

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