Malicious PDF — malware analysis report

Static analysis result for SHA-256 23eea0650cfc1b83…

MALICIOUS

PDF

40.1 KB Created: 2020-08-25 17:44:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 990ec0b9ced7427b08cf2b95c1e9dca2 SHA-1: 3dd9dbf46c5f4bdaa47721480788b10d818a7caf SHA-256: 23eea0650cfc1b83ad21e8b9fde67ca36079832a8e85dfe348073d401608379c
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically disguised as a Google Cloud Print setup. The primary malicious URL identified is https://ttraff.ru/pify?keyword=google+cloud+print+setup. The document body, though heavily obfuscated, contains this URL and numerous other links hosted on cdn.shopify.com, likely to improve search engine ranking and mask malicious activity. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection attack.

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/pify?keyword=google+cloud+print+setup
    • http://files.rceassociates.net/uploads/1/3/1/0/131070867/9900860.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/bukowski_donne_libro.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/labor_time_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/16193769150.pdf
    • https://cdn.shopify.com/s/files/1/0435/4247/9007/files/geographic_information_systems_and_science_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/3111/6448/files/fudusiruwasebi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/16491114304.pdf
    • https://cdn.shopify.com/s/files/1/0431/7996/6628/files/14870231176.pdf
    • https://cdn.shopify.com/s/files/1/0435/0899/0116/files/sotavupanurojop.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/zodemukiredajalerokuri.pdf
    • https://cdn.shopify.com/s/files/1/0434/8392/2585/files/56919859049.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_off00005f09.bin
cf026765f1dcc9b8be0925a07b244e3a18a2cd0e141272ac3928578132586034		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F09 5060 bytes
font_01_sfnt_off00007058.bin
85b6f882ed3610ae58152cd7709181d01cd051aa3ed3e761777da1877a56f7c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7058 10468 bytes

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