Malicious PDF — malware analysis report

Static analysis result for SHA-256 c43d500e5a7efd00…

MALICIOUS

PDF

44.0 KB Created: 2020-08-30 15:55:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90429e47526236cc02354636f32102ce SHA-1: db1f85fe295e39a3c7c03725876958fd2ea2f168 SHA-256: c43d500e5a7efd00b8ef53a3d41899513e14682f4d2b7ca4a6255ca1f264dc88
120 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains text suggesting it is a search result for 'harry potter series pdf', indicating a lure to entice users to click the malicious link. The PDF also contains a large number of embedded links, many pointing to static.usrfiles.com, which is indicative of a link farm used to improve search engine ranking for malicious content.

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=harry+potter+series+pdf
    • https://static.usrfiles.com/ugd/930050_701b9695c15f440f808c857295af1585.pdf
    • https://static.usrfiles.com/ugd/b8c837_997157d551bc4884a913108b97e2cfbe.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa4956cd0a6c44faac8d2f66fbb55a3b.pdf
    • https://static.usrfiles.com/ugd/b8c837_68914df9eb4a44ecb18c928ff4647439.pdf
    • https://static.usrfiles.com/ugd/913720_87de0f94962a431c8cb702c8f80094da.pdf
    • https://static.usrfiles.com/ugd/63d3ad_7064f29fbfe747f1b6eb1e7446ff1f85.pdf
    • https://static.usrfiles.com/ugd/b7ab08_832b062aae40421ba4aab308fe0cf5c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_76747c74d2874c4486a7503f473a05dc.pdf
    • https://static.usrfiles.com/ugd/9b33c5_3a7f95782912484bb54dbb9a8e05ceaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9551/4535/files/image_and_likeness_of_god.pdf
    • https://cdn.shopify.com/s/files/1/0433/4184/0552/files/sadoguju.pdf
    • https://cdn.shopify.com/s/files/1/0432/9016/5403/files/barasurasivejobozoxireb.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa32e7286ed54b8caacc51df05390803.pdf
    • https://static.usrfiles.com/ugd/b8c837_809096bc45d647aabe6144a7a1001dca.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_off0000627f.bin
8e46b3d213115f1d136e603625a21f2bcbe004b3c3ea680ed244dba5bba2951f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x627F 4748 bytes
font_01_sfnt_off000072be.bin
0632a501d96eb004a6f4d2dc6f0ad55b403cb248c2384a9ab3d61c3d7d242f43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72BE 10216 bytes
font_02_sfnt_off0000956c.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x956C 4324 bytes

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