Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80d53607d280d72…

MALICIOUS

PDF

44.6 KB Created: 2020-08-30 19:22:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54ed0d2aecb9c5a6b678ef6bdd9ec6ba SHA-1: 81d62854bc662782ee3f92ec5ae2e9483fb1bc70 SHA-256: f80d53607d280d7236936cf5761f962a6f478b60ac62c0b9e19112498bec1c3f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a common tactic for SEO spam and phishing campaigns. One of the embedded URLs, 'https://ttraff.ru/wix?keyword=native+instruments+maschine+user+man', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user 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/wix?keyword=native+instruments+maschine+user+man
    • https://static.usrfiles.com/ugd/b8c837_53ffbf92a211448f8ce4d0da030e7222.pdf
    • https://static.usrfiles.com/ugd/b8c837_34660902ac7545cfbb8a3f9c8db5ca92.pdf
    • https://static.usrfiles.com/ugd/b50c55_56b4f7a6f07747a4a7d78efb561e48dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_0abbcbbff42644c4a10cc8ae1872525a.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1236/files/zuxokogezatoxapisaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/4550/9537/files/paxigolenerozagupozajafat.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/kotiravuzerefagilenofuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/0704/7840/files/esmo_guidelines_thyroid_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4831/files/centurylink_ip_address.pdf
    • https://cdn.shopify.com/s/files/1/0431/3976/0295/files/aspirational_districts_programme.pdf
    • https://static.usrfiles.com/ugd/234f58_dee17bcb91bd4f4bac3c5ebed0c27c95.pdf
    • https://static.usrfiles.com/ugd/accd1f_f10b99d350a3404dad54ce4525d6a07f.pdf
    • https://static.usrfiles.com/ugd/33a16d_44308bf26af942dc9873ce7e9f4eaf0d.pdf
    • https://static.usrfiles.com/ugd/735189_d6a93955eac04d57a71896933ea692a0.pdf
    • https://static.usrfiles.com/ugd/271e65_6e3a56a248234050bda9c68c9911c8dc.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000647a.bin
969b5adf61f47e88bb11927cbd6f4924f30577d1014da8f116bda12ade40e50f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x647A 4808 bytes
font_01_sfnt_off0000749f.bin
99d55a2574c91843170d1ea20c7fa489227895640e0c09ded09de65eb6a5d988		 pdf-font-stream PDF embedded font (sfnt) at offset 0x749F 10072 bytes
font_02_sfnt_off0000970d.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x970D 4324 bytes

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