Malicious PDF — malware analysis report

Static analysis result for SHA-256 c89bfd07bbe203a1…

MALICIOUS

PDF

32.5 KB Created: 2020-08-17 16:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 889515d289ce3834567de9f1f3ac74d6 SHA-1: f54757e7fa427e737dcb25b98ba788f511766e94 SHA-256: c89bfd07bbe203a1d63ff9462f7bfb29f0c2c214ccaf54cae74d5cca9f84ace1
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=chhota+bheem+2019+ka+video', which is likely the primary malicious payload delivery mechanism. The presence of a link farm heuristic further supports the malicious intent of directing users to external, potentially harmful, 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.ru/pify?keyword=chhota+bheem+2019+ka+video
    • http://files.rurallibrariesresearchnetwork.net/uploads/1/3/0/7/130740231/9446833.pdf
    • https://cdn.shopify.com/s/files/1/0440/8305/2696/files/low_cholesterol_diet_patient.pdf
    • https://cdn.shopify.com/s/files/1/0428/1162/1543/files/iris_flower_data_set.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7920/files/ashrae_90._1_appendix_g.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/numaxeg.pdf
    • https://cdn.shopify.com/s/files/1/0440/9376/7832/files/biogeography_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/mark_sheet_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/73078405393.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7002/files/exploratory_data_analysis_tukey.pdf
    • https://cdn.shopify.com/s/files/1/0428/1561/9239/files/fajokiwusijefogaduse.pdf
    • https://cdn.shopify.com/s/files/1/0430/2431/8618/files/blade_and_soul_gunslinger_guide_2018.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_off00004515.bin
9e688d311379216e1fff2e573ee73b47c8c8716887a9fd24fb0b0a214c77b7e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4515 5412 bytes
font_01_sfnt_off00005766.bin
5581c71f2c83a63b49b1ab993ec753639efea029bada9fdea68f5efed957708c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5766 8924 bytes

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