Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a073c1eb770fa14…

MALICIOUS

PDF

50.0 KB Created: 2020-09-01 08:49:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b262235d1946f89f42a4fd39e7bea7fd SHA-1: 575c2c8f3094a734651f8de24baa782a1731c5d9 SHA-256: 1a073c1eb770fa1464b4520d2027c9e29f6216783e6963fbba93044e9fdd8592
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.link/wix?keyword=clasificaci%25C3%25B3n+bethesda+cervix+pdf'. Additionally, another critical heuristic indicates a PDF link farm with numerous external links, including one to 'https://static.usrfiles.com/ugd/b8c837_271cbeca9dab4340b6fc9ed23a2e7d22.pdf'. The ML classifier also strongly flagged this PDF as malicious. The document body appears to be malformed or obfuscated, but the presence of these malicious links suggests a phishing or redirection attempt.

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.link/wix?keyword=clasificaci%25C3%25B3n+bethesda+cervix+pdf
    • https://static.usrfiles.com/ugd/b8c837_271cbeca9dab4340b6fc9ed23a2e7d22.pdf
    • https://static.usrfiles.com/ugd/6c032c_e443d3945a8b4450992bfb621c74c779.pdf
    • https://static.usrfiles.com/ugd/b8c837_27adc5cc3eed4076be5d6a00517034c0.pdf
    • https://cdn.shopify.com/s/files/1/0429/9279/5801/files/16487306722.pdf
    • https://cdn.shopify.com/s/files/1/0466/8529/0660/files/86038999249.pdf
    • https://cdn.shopify.com/s/files/1/0434/1897/6414/files/58108720844.pdf
    • https://static.usrfiles.com/ugd/7198c1_cc1a4857151945bbb5066aa25f121ee1.pdf
    • https://static.usrfiles.com/ugd/dc98cc_3f6f90b0d6094536bcec26a2d281e6f6.pdf
    • https://static.usrfiles.com/ugd/89c6ad_b894cb36f9f5477c919d31049e128b92.pdf
    • https://static.usrfiles.com/ugd/1f2646_495b836d28e945199f2649810d132537.pdf
    • https://static.usrfiles.com/ugd/b444d4_3c4cd7b096be4f8792f453a99b8116a0.pdf
    • https://cdn.shopify.com/s/files/1/0430/4502/7993/files/fipateridafu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/moziper.pdf
    • https://cdn.shopify.com/s/files/1/0461/1457/0404/files/popifarigitefoniruwazi.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_off00008168.bin
d07f33e41d1082293b239729ff2fb00bb91abcc5c518f34fa00acf5adb78f58a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8168 5552 bytes
font_01_sfnt_off00009402.bin
722ca5bc29d688dcb25e91b6b3609d4b500d2f4b249c0cca6c881e6e99b4e99c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9402 11336 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.