Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e43be577499d3d…

MALICIOUS

PDF

42.2 KB Created: 2020-09-17 06:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cfe28f6003b3e42e414b2fd70027397 SHA-1: 42da616a46b583d9b74408c2ba56b8b068a11a52 SHA-256: e8e43be577499d3d176f346a8e115cdee32bc64d1b6e3de43ea75564ec96af94
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector URL that points to malicious infrastructure. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary purpose is to redirect the user to a malicious site, likely for phishing or malware delivery.

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.link/wix?keyword=body+power+inversion+table+parts
    • http://files.oake.com/uploads/1/3/0/7/130740033/rorajanolafusig.pdf
    • https://ab2d9f2a-761f-45e4-ac44-1868455373fe.filesusr.com/ugd/d99ef3_163b9eecb96540c193691804a70d002d.pdf?index=true
    • https://49929e0d-7a68-4aa8-a445-95f5953e9119.filesusr.com/ugd/d93890_0a9fbfc48a8f4c5bb7378e3484e6a365.pdf?index=true
    • https://a23a4892-2200-41de-9c1d-8147daeff886.filesusr.com/ugd/d61b30_8e62e4c7d9f14df7a64396de7d7a496b.pdf?index=true
    • https://c9caa6b3-e833-4dd0-838c-40cd6846c25d.filesusr.com/ugd/4a2613_620f9598bf7642d2bfdbdaa922b5f372.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/kukebixunovazumafoxit.pdf
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/bergey_s_manual_microbiology.pdf
    • https://50117d6b-f176-4718-932a-24f1d640d9e3.filesusr.com/ugd/3d0627_2b68ee67c61746fe9d4ae49c9f0f7b20.pdf?index=true
    • https://09f4cfb7-8b7b-4562-a313-c9c0a3c5ccbf.filesusr.com/ugd/7baf93_9c2b2242f8004504916cb818a8eb8854.pdf?index=true
    • https://3033312f-c034-46b3-a9c9-a36650670b7b.filesusr.com/ugd/e3325f_58753badefaf43008848d54295c65ae5.pdf?index=true
    • https://6f5d7eee-6bd4-4792-a61f-e483692e84e8.filesusr.com/ugd/bdc04d_638491b1fa464de5b8fca9f3d037ea18.pdf?index=true
    • 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_off00006756.bin
0bd4992904023a8beacb727f58da138a8c2c253ad09a5a7409d7946200827e05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6756 5396 bytes
font_01_sfnt_off000079d2.bin
00cef6d0ac84dc37d58fb2bdb66abf8308a34c4bf8b84da1ca5b60f2421198cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79D2 10028 bytes

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