Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ee1744ae9091bf…

MALICIOUS

PDF

32.1 KB Created: 2020-09-01 10:35:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4bddee85e4dbd69f3b21affc46d2ecf SHA-1: 4b82a7e7ea16a4d63a5b74a90af4adf0e421f359 SHA-256: b6ee1744ae9091bfffef09147c989ae0ae99fcd8f3fbb313044d9edf20376012
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The document body, though heavily obfuscated, contains the same URL. This URL likely serves as a lure to a malicious site, potentially for phishing or malware distribution. The presence of numerous other PDF links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to increase visibility.

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=herpes+simplex+virus+nice+guidelines
    • https://static.usrfiles.com/ugd/917232_4297d6c0d4b34c058b267d8c3c711fdf.pdf
    • https://static.usrfiles.com/ugd/8d57bd_2c06e59ec8aa443f841f35fec5bff3a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd37b76d2ec74490b5eea5eed756c6b8.pdf
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/xufuvademukemu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5761/7823/files/41863129687.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/tamodewevaroxafofukidatu.pdf
    • https://cdn.shopify.com/s/files/1/0438/8972/1496/files/blood_circulatory_system_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/14451149761.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/arap_bahar_tunus.pdf
    • https://cdn.shopify.com/s/files/1/0469/0522/9474/files/tape_play_script.pdf
    • https://cdn.shopify.com/s/files/1/0437/1025/1176/files/46530718619.pdf
    • https://cdn.shopify.com/s/files/1/0434/3231/2994/files/41135085800.pdf
    • https://cdn.shopify.com/s/files/1/0429/4849/3475/files/ada_developers_academy_essay_questions.pdf
    • https://cdn.shopify.com/s/files/1/0434/6216/4644/files/juzogugivukojomod.pdf
    • https://cdn.shopify.com/s/files/1/0432/6853/8524/files/korekam.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_off000042e7.bin
760d2eeb798fb2b0cdf491315e3d97e81386c39c3da286016f7b93e740d2a858		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42E7 5272 bytes
font_01_sfnt_off000054c9.bin
a862bfdf99c3750e873950653ac82ead9c119dfdbfc5f40a3db6c07ff57330b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54C9 9044 bytes

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