Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d8618463033f232…

MALICIOUS

PDF

46.5 KB Created: 2020-08-08 19:37:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 651921397a0e5728d845941544157dd9 SHA-1: 80f83c4fbd1bed952f9cd57356b4e02f5fb39916 SHA-256: 9d8618463033f232b2ba7a3a4afb20561374b9b8bc9d4c5edffdcf5f7308164c
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same suspicious URL. This indicates a phishing attempt to redirect users to malicious infrastructure, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/wb?keyword=leonard%20mlodinow%20subliminal%20pdf
    • http://pexisefa.johnstonlurecompany.com/uploads/1/3/2/6/132683188/3115007.pdf
    • http://tesid.agelessinwesterncanada.com/uploads/1/3/0/7/130738870/1f17afa5336c2d2.pdf
    • http://files.woronoravalley.com/uploads/1/3/2/7/132740685/3292759.pdf
    • http://files.apartment-in-zagreb.com/uploads/1/3/0/7/130739806/ruxaxojif.pdf
    • https://cdn.shopify.com/s/files/1/0437/2119/5669/files/50476219370.pdf
    • https://cdn.shopify.com/s/files/1/0440/8282/3320/files/spring_boot_advanced_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/4945/9605/files/zojixuritaxot.pdf
    • https://cdn.shopify.com/s/files/1/0433/9659/5870/files/53408680667.pdf
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/27177379813.pdf
    • https://cdn.shopify.com/s/files/1/0432/6303/3507/files/bumujinududuguzukive.pdf
    • https://cdn.shopify.com/s/files/1/0438/4374/7990/files/diduneregulibisow.pdf
    • https://cdn.shopify.com/s/files/1/0438/7966/1736/files/48133640671.pdf
    • https://cdn.shopify.com/s/files/1/0436/4818/8569/files/dugufawivonufufotedelejum.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/bijebun.pdf
    • https://cdn.shopify.com/s/files/1/0440/1663/1973/files/lilidotebowanedabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/98096965701.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_off0000777e.bin
efbf4fdb3ac9eccd94e2de62c11735e4643b368bae06abb780d572f5efa9f5ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777E 5360 bytes
font_01_sfnt_off000089b0.bin
5cf0b3446d3bf97af12417b545065007edfc2a944feaf476fcd256f986a3bd37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89B0 10280 bytes

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