Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a85d5d51ac15cf4…

MALICIOUS

PDF

45.8 KB Created: 2020-08-21 07:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c173abb22efb24c0e3f4f44b274b4572 SHA-1: 466fac74d727122791025811d3fda20e19cab642 SHA-256: 9a85d5d51ac15cf4f3d1b4be9eff64f4a3a68faaea72d6e4c75c9246ab09786a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=glary+utilities++cnet'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and the malicious URL, suggesting an attempt to lure users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=glary+utilities++cnet
    • http://razinek.activatingauthenticity.com/uploads/1/3/1/6/131606490/gezuwelivotuwisiga.pdf
    • http://bapekivuk.mattersofthesoul.org/uploads/1/3/1/3/131379290/7c405.pdf
    • http://files.thebigquincebooknook.com/uploads/1/3/1/4/131437724/5956491.pdf
    • http://files.riversplusguiding.com/uploads/1/3/1/3/131379919/eb8d21fd.pdf
    • http://files.vpokerfriends.com/uploads/1/3/1/4/131453944/6857726.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1164/files/just_the_way_we_are_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/2564/5211/files/43025756994.pdf
    • https://cdn.shopify.com/s/files/1/0428/6660/6247/files/advance_directive_form_missouri.pdf
    • https://cdn.shopify.com/s/files/1/0430/2507/2282/files/74144158892.pdf
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/insider_guides_international_students.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1217/files/nz_guidelines_for_cholesterol_levels.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/kegikunusexetinulenufukis.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_off00006a9a.bin
48568d2d6b54b3da919ee43ed1e85ca78076f1f6048b965fe28689375883e94d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9A 4700 bytes
font_01_sfnt_off00007aa7.bin
d718868c8abc61b0d2967f0a8aa7b6da978cb9bec2562e51a731223b3a286ea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA7 9872 bytes
font_02_sfnt_off00009c6b.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C6B 4324 bytes

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