Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f50a1a5f3c919bc…

MALICIOUS

PDF

39.9 KB Created: 2020-08-20 04:09:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b871abfdbc1c30b601356def0a617eda SHA-1: 57b81524d5650d684eb5b9cb6046b0d63b1b3eec SHA-256: 8f50a1a5f3c919bc78115df8b3c40394d1562ecf887e89a89ebcccf75b60b350
150 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it's a malicious redirector and part of a link farm, aiming to direct users to harmful infrastructure. The document body, though partially corrupted, includes the URL 'https://ttraff.ru/pify?keyword=alimentacion+balanceada+pdf+minsa', which is flagged as malicious. This suggests the primary goal is to redirect users to a malicious site, likely for further exploitation or phishing.

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=alimentacion+balanceada+pdf+minsa
    • http://files.anoopbrar.com/uploads/1/3/1/4/131452988/vosefesona-totofefumibapim-rusiteviluwiv-jexiniwupe.pdf
    • http://lunad.twooldmaresblanketservices.com/uploads/1/3/1/1/131164250/mokopebujonologaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/7377/2447/files/67168667246.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12091312038.pdf
    • https://cdn.shopify.com/s/files/1/0433/5920/7592/files/nokitegebapadumigivikos.pdf
    • https://cdn.shopify.com/s/files/1/0435/1010/4216/files/13216007508.pdf
    • https://cdn.shopify.com/s/files/1/0432/3006/8898/files/gomevebaga.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/nopubis.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/fallout_4_settlement_management_software.pdf
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/bearing_catalogue.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_off00005e40.bin
e730319a08013686255f239da798b91a4dd08bf89e5aa02b48df7425ceb2506a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E40 5332 bytes
font_01_sfnt_off00007041.bin
10bf8985444300f14cc9dae002e98a8621f4480c9f720f646f034452b5201860		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7041 10288 bytes

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