Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5ea4dcfff74e476…

MALICIOUS

PDF

42.6 KB Created: 2020-08-28 23:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a8422538043724c548b7c5f7616baf4 SHA-1: d93529eab62e5b93d4f1c51fe39f93ebfa24b034 SHA-256: b5ea4dcfff74e4761995243e1a4ab19c7cbc11ad98eb588910c05dad5e84b2aa
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a PDF link to a known malicious redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL. The presence of a link farm suggests an attempt to distribute malicious content or redirect users to phishing or malware download sites.

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=footloose+1984+online+espa%25C3%25B1ol
    • https://cdn.shopify.com/s/files/1/0440/2960/8101/files/wabokikamot.pdf
    • https://cdn.shopify.com/s/files/1/0433/5645/5067/files/bajirao_mastani_song_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5167/0943/files/menumixifi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2015/5037/files/35804511392.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed59e422ec054ee081e18de4f03e6c5c.pdf
    • https://cdn.shopify.com/s/files/1/0439/2147/3691/files/47011176025.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7808/files/keystone_credit_recovery.pdf
    • https://cdn.shopify.com/s/files/1/0435/0751/5558/files/vujagafal.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/86511440649.pdf
    • https://cdn.shopify.com/s/files/1/0440/4002/8325/files/aace_diabetes_guidelines_2019_powerpoint.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_off000051b6.bin
23852608de70d2003fd75143916e2f6ed755b820edfa0b6f4277bf7262f20d3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51B6 5372 bytes
font_01_sfnt_off000063d1.bin
dd67a52622141d74665e933784a14f8f033710fd5807bae243bf4833b7f2b2f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D1 10172 bytes
font_02_sfnt_off000086ee.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86EE 16092 bytes

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