Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf765edb0d02432…

MALICIOUS

PDF

46.8 KB Created: 2020-08-31 18:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 851b10ba2a85495bb914d28a1e57ebe9 SHA-1: f3edfd3f4532c51442572eead8738e17c30f8c70 SHA-256: eaf765edb0d02432ebb40a0e1b31dec3bfd3c5e08b3e6a0b977c5b748842ef36
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially garbled, contains text related to 'Problemi ultimo aggiornamento android 9', suggesting a lure to trick users into clicking the malicious link. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, further supporting the malicious intent of directing users to external 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.cc/wix?keyword=problemi+ultimo+aggiornamento+android+9
    • https://static.usrfiles.com/ugd/b8c837_d22b7b1c7ebd4c4f93e4430c7519d839.pdf
    • https://static.usrfiles.com/ugd/b8c837_00a9562b2044405db30aef232bb75b87.pdf
    • https://static.usrfiles.com/ugd/3b7182_db4b644e90064eff86ed5b433b2f861c.pdf
    • https://cdn.shopify.com/s/files/1/0432/1234/1409/files/nafuzogalosazago.pdf
    • https://static.usrfiles.com/ugd/daca0d_5a8a715ab4ef40a58d3f1bbb9be65547.pdf
    • https://static.usrfiles.com/ugd/39d081_ccaa521826d24c4dadd3d1b4ac0d9ff4.pdf
    • https://static.usrfiles.com/ugd/b8c837_8892b15cb6374fb282c2bf28db096ec0.pdf
    • https://static.usrfiles.com/ugd/47b1e8_ea17e65f0d554e69883a64ed510c6017.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4691/files/22144126320.pdf
    • https://cdn.shopify.com/s/files/1/0434/7500/9698/files/printable_2020_nascar_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0437/0530/3190/files/54591675072.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5799/files/degabinemuzibaw.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_off000069ef.bin
36d89deb662caa7e9836e72e87dc44990912ff62fc444b938abb918c75fde469		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69EF 5144 bytes
font_01_sfnt_off00007b46.bin
1e38aa1b2a83dc53e003c705a86e4a67154384087d2c7a6a5d94083bf733e90e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B46 11160 bytes
font_02_sfnt_off00009edd.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EDD 4324 bytes

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