Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f8232c0b558c796…

MALICIOUS

PDF

45.4 KB Created: 2020-08-30 16:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85a8ca4762662f1200482f3fd36bb7fe SHA-1: 77023745999272a10d4625c052c52fef9228e941 SHA-256: 8f8232c0b558c796c49aaeef9bc271005c1dc5b765c7a3a00aba7f7116f72b5e
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body is obfuscated but contains the same URL as the redirector. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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=medu+neter+language
    • https://static.usrfiles.com/ugd/b8c837_8731ca8a8b6c45afb1c21e8d644fb998.pdf
    • https://static.usrfiles.com/ugd/b8c837_85da2e815a04463ca0461b7aa322d485.pdf
    • https://static.usrfiles.com/ugd/b8c837_4b8b50b6c65d44b3a894d9dbbbea10e3.pdf
    • https://static.usrfiles.com/ugd/6f9b04_d988ec914af5458fbb492f35bc7f913a.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/d_d_5e_aarakocra.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/sbi_car_insurance_policy_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0433/9512/1319/files/jetobewemewex.pdf
    • https://cdn.shopify.com/s/files/1/0459/6999/7984/files/mr_bean_movie_utorrent.pdf
    • https://cdn.shopify.com/s/files/1/0428/8764/3303/files/comment_joindre_un_sur_facebook.pdf
    • https://static.usrfiles.com/ugd/a86d68_ad1866f7dc7d488e907619972bb54b8a.pdf
    • https://static.usrfiles.com/ugd/c5d40f_c4b0237d1db14aad90f3419b736a6e61.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffa8688089a64fd181585a1459adc7e0.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_off00007445.bin
1bfc5371f0d63322a8aacaf86e35ed880b801156b7dd6c0f5d206b85a39411a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7445 4820 bytes
font_01_sfnt_off000084b4.bin
219fa97b68f97089e916f0322e70e999efa30e9d0e149a0a15965033a935e56f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84B4 10748 bytes

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