Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df131a0178a0c64…

MALICIOUS

PDF

45.5 KB Created: 2020-08-10 12:27:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f3c52eda5449c17853ab89889ecfb73 SHA-1: b7060b2ba1379ebbaae61022fcdda3d8b50214ea SHA-256: 7df131a0178a0c645677d45e01840115aed82167a8886f18791cff8d68f5c55e
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that is also present in the malicious redirector link. This suggests the PDF is designed to act as a link farm, directing users to malicious infrastructure.

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=sejarah+agama+hindu+di+indonesia+pdf
    • http://files.canadiancutthroat.ca/uploads/1/3/0/7/130775520/minagovanem.pdf
    • http://bowaju.curiositytransforms.com/uploads/1/3/1/3/131379965/51dbbf3f0b47.pdf
    • http://files.odjrl.com/uploads/1/3/1/0/131070591/a846f06348d9.pdf
    • https://cdn.shopify.com/s/files/1/0431/6086/2874/files/affectation_du_rsultat_ohada.pdf
    • https://cdn.shopify.com/s/files/1/0429/1044/9830/files/37748068152.pdf
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/sizibufu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7779/4982/files/22502386248.pdf
    • https://cdn.shopify.com/s/files/1/0429/4279/1839/files/compound_interest_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/magerod.pdf
    • https://cdn.shopify.com/s/files/1/0437/0890/7688/files/agricultural_engineering_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zemeletitofugawekabol.pdf
    • https://cdn.shopify.com/s/files/1/0431/5679/9647/files/61746149827.pdf
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/nekajedosimifutowilar.pdf
    • https://cdn.shopify.com/s/files/1/0435/6567/8755/files/nimop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nakoximowukod.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/zujizoferunanilewimova.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/
    • https://cdn.shopify.com/s/files/1/0429/4279/1839/files/compound_inte

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073c9.bin
350b516b70ad705293a260a62c9a5873aa2fc62d98756b44088143175e22760d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C9 5604 bytes
font_01_sfnt_off000086b1.bin
727cc45d9e7b61d28915f68860adbb4fc233cf9751349a21901fd8d1ffbf026b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86B1 9888 bytes

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