Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a8fb1750d4e88f…

MALICIOUS

PDF

45.5 KB Created: 2020-08-31 04:36:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00699945129c90c8cc175d0ef6af00f9 SHA-1: e426e43760ec2868b7a451f3f6a258c053bd969a SHA-256: 89a8fb1750d4e88f11b99de1435b36c743ffcf62d3f30bea6936227b9d7cbe6f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=circuito+somador+completo+4+bits'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to Shopify-hosted PDFs, including 'https://cdn.shopify.com/s/files/1/0431/6289/4485/files/bipitexos.pdf'. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes the malicious URL and a benign-looking PDF link, suggesting a lure to a malicious 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.ru/wix?keyword=circuito+somador+completo+4+bits
    • https://cdn.shopify.com/s/files/1/0431/6289/4485/files/bipitexos.pdf
    • https://cdn.shopify.com/s/files/1/0431/0292/9047/files/teledidikub.pdf
    • https://cdn.shopify.com/s/files/1/0440/5172/6501/files/tous_les_accords_piano_jazz.pdf
    • https://cdn.shopify.com/s/files/1/0434/2192/5543/files/proton_annunciator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/84352194723.pdf
    • https://cdn.shopify.com/s/files/1/0464/3058/4984/files/bedava_porno_vido_indir.pdf
    • https://cdn.shopify.com/s/files/1/0440/5175/9269/files/convert_file_online_for_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/1882/0511/files/scanner_next_char.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/jebojuxunokujogij.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_f756e0b8789948db9f43c58219c1ddb2.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_f53bbb42b39749d4b67080b2c084574a.pdf
    • https://static.usrfiles.com/ugd/ac51ce_e15c03aedd7b4eedac61d3adcca107f7.pdf
    • https://static.usrfiles.com/ugd/7ff653_f93bc9f086a744d987013792f562ecb9.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_off0000693c.bin
7b9c1ad248dcaef01c7adb4df71c22141da68cde87cc5ccff7cadb2d821898f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x693C 1768 bytes
font_01_sfnt_off000071e2.bin
99d340a56543f96ab388ff54d89b6f99b6f79dc4cb27c4f42cf4197abba991c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E2 5352 bytes
font_02_sfnt_off000083f0.bin
c74cc5369312212599b0397dcebd265c9cf1faf877990ebd7975cfc458940799		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83F0 10888 bytes

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