Malicious PDF — malware analysis report

Static analysis result for SHA-256 e484c109a5e72c6d…

MALICIOUS

PDF

38.3 KB Created: 2020-08-29 06:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5aecc7de92674729e0177e2a4d8ca035 SHA-1: 901b59b3f3f395ea6df2a3efce33c606429a9256 SHA-256: e484c109a5e72c6d2a8384b8999490549db0ee17d64e38217d79ba4e93a1595c
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 to other PDF documents, a technique often used for SEO poisoning or to obscure malicious redirects. One of these links, https://ttraff.cc/wix?keyword=fiba+world+cup+team+usa+channel, is identified as a malicious redirector. The document body itself is heavily obfuscated and contains this same malicious URL, suggesting the primary purpose is to lure 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.cc/wix?keyword=fiba+world+cup+team+usa+channel
    • https://cdn.shopify.com/s/files/1/0463/3113/4113/files/zusukudavuzapelulurefode.pdf
    • https://cdn.shopify.com/s/files/1/0433/1313/5774/files/average_velocity_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/9648/9632/files/94023495857.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1813/files/differential_scanning_calorimetry_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/8394/7414/files/35134479153.pdf
    • https://cdn.shopify.com/s/files/1/0439/4146/2174/files/41533969720.pdf
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/35429980982.pdf
    • https://cdn.shopify.com/s/files/1/0435/8458/5883/files/pre_wedding_invitation_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/romeo_and_juliet_monologue.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f1532a2c80a424cbfe51b4caba5ce6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_04709d29d7f440bb9faddb0415b5f13f.pdf
    • https://static.usrfiles.com/ugd/b8c837_2980f03b62a040bf9d78b0240be816ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_46ffed815959402a96d0ae1f5e3eee2a.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_off00005641.bin
45665a471d6521451b26eea80a451496111202fcb7e65652f60fee37953640f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5641 5500 bytes
font_01_sfnt_off000068d6.bin
f386a91bad1d2a663894cbec572a7a5ad405b2c48c2c47286c662a7be59783bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68D6 10592 bytes

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