Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac9fe9a90a6ce6bd…

MALICIOUS

PDF

84.8 KB Created: 2020-08-09 04:57:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 432000275f55c0734ea9e42fc73b55d2 SHA-1: ae78ede8c2bc5717f0297e94a9efa27ed7036eb8 SHA-256: ac9fe9a90a6ce6bd04754f638a029b96a70af42a6317f5d0a3da0782b4ea0e6a
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 malicious redirector. The document body, though heavily obfuscated, contains text related to 'antipsychotic drugs side effects pdf' and a URL that matches the malicious redirector. This suggests the document is designed to trick users into clicking malicious links, likely for phishing or malware distribution.

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=antipsychotic+drugs+side+effects+pdf
    • http://lepugorew.landsendmarinainc.com/uploads/1/3/0/9/130969723/maxuxo.pdf
    • http://furaz.mymonocle.com.au/uploads/1/3/1/6/131606636/4960071.pdf
    • http://files.truthiflifemin.org/uploads/1/3/1/4/131438111/3116978.pdf
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/22_liters_to_gallons.pdf
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/fejirufokeri.pdf
    • https://cdn.shopify.com/s/files/1/0431/5676/6882/files/50780857268.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6157/files/carnival_of_souls_1998.pdf
    • https://cdn.shopify.com/s/files/1/0452/1459/7271/files/mht_cet_2020_result.pdf
    • https://cdn.shopify.com/s/files/1/0437/9194/1781/files/21368998158.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/41131511300.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdf
    • https://cdn.shopify.com/s/files/1/0440/8596/9048/files/basumapiwazi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0678/files/52135616853.pdf
    • https://cdn.shopify.com/s/files/1/0434/5446/4165/files/arduino_nano_projects.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_off00010ea1.bin
63627e74e37fd315de8f2b7d3d15915b65dcda5d926e73ab421e061e2fde8c07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA1 5264 bytes
font_01_sfnt_off00012094.bin
bd9014f6a665420b597f71e7b4eb641a786764b8d89e2dbcd81b975413799970		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12094 11028 bytes

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