Malicious PDF — malware analysis report

Static analysis result for SHA-256 e68c85674c7b924d…

MALICIOUS

PDF

41.5 KB Created: 2020-08-30 06:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52e2b3288df2d1e0e128e8fcb9a20a72 SHA-1: 9f87ecf521050c9776e8c1b1f8d04df969c83c0e SHA-256: e68c85674c7b924df174cffd3a504b1436f58298e41b20ed641a9bebeca9e54b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a link farm. One of the primary links, 'https://ttraff.com/wix?keyword=roland+gr+20+manuale+italiano', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to redirect the user to malicious infrastructure. The presence of multiple shopify links, while individually benign, contributes to the overall SEO spam nature of the document.

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.com/wix?keyword=roland+gr+20+manuale+italiano
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/php_get_first_element_of_array.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4882/files/zibitafupexur.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2635/files/gelog.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/20367987374.pdf
    • https://cdn.shopify.com/s/files/1/0433/3810/5000/files/konunatuxoxokubapubu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2837/2886/files/24090369788.pdf
    • https://static.usrfiles.com/ugd/b8c837_2cdd7914f6664c0fb4f3b3874868d185.pdf
    • https://static.usrfiles.com/ugd/b8c837_34b50b827e3f437b9d9bbf6ab7b54bb4.pdf
    • https://static.usrfiles.com/ugd/55cc32_81307e75948946c2a9f264596358dadd.pdf
    • https://static.usrfiles.com/ugd/353d00_0fc4f9db2ac4472fb0108608ce0e317f.pdf
    • https://static.usrfiles.com/ugd/83b1b3_52e035fee23f4ec2ae4a00ac114986cc.pdf
    • https://static.usrfiles.com/ugd/724bd4_cb5937a651a242bb9fca269ce47b4850.pdf
    • https://static.usrfiles.com/ugd/af0aa9_23a9d230867d44d79f98b7754365354e.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://static.usrfiles.com/ugd/83b1b3_52e035fee23

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006464.bin
32572ef01b5841ea02fefb499598c75c77a5f915373029ca462f4a7074b22b89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6464 5248 bytes
font_01_sfnt_off00007622.bin
1980b0ec59ef993967dd4f6bec5d15815d8d6fcbc5b19b12b03f2ba528a8972e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7622 10204 bytes

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